Edit: Drats, I spoke too soon. The server seems to up now.

Oh and node can easily do millions of connections and lighttpd beat the 10k problem a long time ago.

Here's link to Google cache: http://www.google.com/search?q=cache:http://aeon.co/magazine...

Colonization is a pipe-dream in our immediate future.

Besides, climate change won't kill humanity. We'll adapt, even as climate change makes life on Earth difficult.

These numbers have 3 scenarios, all fairly optimistic:

Conventional (gasoline) emissions are 19.9 kg GHG emissions per 100 km.

1. Electricity is produced from renewables and nuclear

1a. Electric emissions are 0.343 kg/100km

2. 50% electricity from renewables, and 50% from natural gas with a 40% efficiency

2a. Electric emissions are 5.21 kg/100km

3. All electricity from natural gas with a 40% efficiency

3a. Electric emissions are 10.1kg/100km

At this point, I should note that burning natural gas has roughly half the emissions associated with burning coal in terms of CO2 equivalency.

Let's run with the middle scenario, which is still totally not representative of the country as a whole[3]. And we need some mileage, thankfully there are statistics on that. I'll use the 35-54 age group, which I'm guessing are the most likely to own Teslas, so 15,291 miles a year[4], which becomes 24,608km.

Aright, so we have 60,000 electric cars that we're gonna assume are straight-up replacing 60,000 conventional cars. Each car would replace 14.69(24608/100) = 3614.9152kg/year(60,000 cars) = 216,894,912kg. This is the annual grossly simplified reduction in emissions of replacing 60k conventional cars (using numbers from that paper for what a conventional car means) based on that idealized generation mix.

In 2012, our emissions were 6,526 million metric tons of CO2 equivalent[5]. Scaled down to our kilograms, it becomes 6,526,000,000,000kg. That amount displaced up above would account for 0.00332% of total emissions in 2012 based on those numbers.

For some other perspective, Ford F-series sales have been up significantly the past two years[6] post-ish recession, and 16 mpg seems like a reasonable average for that line of vehicles[7].

More perspective, the MIT study "The Future of Coal"[8] pegged an average 500MW coal plant as producing 3 million tons of CO2 a year (although it ranged up to 4.5 or so million tons in other literature). That presents a range of 2,722,000,000 - 4,082,000,000 kg. Although not all of that is necessarily emitted in every case. So, displacing one 500MW coal plant with say, a large wind farm, would displace 12.5x what those 60k cars would do annually.

Basically, what I'm getting at is that researchers and policy makers involved with utilities, DOE initiatives, and state governments (via RPS, no overarching federal clean energy policy[although the PTC obviously has a huge effect]) are probably all doing more to tackle climate change than Elon Musk. Not to crap on him, I would love to own a Tesla, I just like energy topics.

Links 2 and 8 are pdfs.

[1] http://en.wikipedia.org/wiki/Tesla_Motors#Model_S [2] https://facultystaff.richmond.edu/~sabrash/110/Chem%20110%20... [3] http://www.eia.gov/electricity/data/browser/#/topic/0?agg=2,... [4] http://www.fhwa.dot.gov/ohim/onh00/bar8.htm [5] http://www.epa.gov/climatechange/ghgemissions/sources.html [7] http://www.fuelly.com/car/ford/f-150 [8] http://web.mit.edu/coal/The_Future_of_Coal.pdf

If you really want a greener planet, do something in terms of public transport. Silicon valley is gas guzzling society and nobody is doing anything about it (tesla's home)

Amazingly, he's working on more than one project at a time.

How much CO2 would you need in the atmosphere to do that??

Bear in mind that hundreds of millions of years ago, Venus used to have an atmosphere much more like Earth's, and there may have even been liquid water on the surface. But a runaway greenhouse effect caused all that to change dramatically. It took a very long time, but obviously Venus didn't have people there to help speed things along.

Yes, true, with one mitigating factor -- methane doesn't stay in the atmosphere very long. It breaks down fairly rapidly. It's a much more efficient greenhouse gas than CO2, but it's short-lived.

So as a billionaire, do you spend your legacy on abandoning the kids and chilling at the neighbors, or staying and tending to the problems here?

Space colonization don't required that much cooperation. All it needs is an environment conductive to launching rockets and currently that is the United States.

So we just launch a rocket to Mars ... wipe our hands and be done with it? Considering the efforts just to build/launch the ISS, I can't imagine rocket launching capability is high on the list of worries re:colonizing Mars.

The ISS isn't a space mission; it's a political and diplomatic mission that happens to be done in space.

Colonizing Mars is going to be difficult, but it's going to involved a whole lot less people willing to cooperate and pay for it.

The issue is more technological. The rockets need to be cheaper and carry more payload to allow the feasibility of people paying for their own ticket to Mars.

I wouldn't give good odds on earth remaining inhabitable for more than a couple of hundred years, at the rate we're going (assuming I'd live long enough to pay out.)

It doesn't have to be either/or. But politically, the odds of an unsuccessful Earth creating a viable Mars colony are somewhere very near zero.

It's time to go have a poke around and see what we can find, there's a fair chance people might die along the way, but someone has to take that first step.

Given that we are on an exponential growth curve both in terms of technology and wealth, it seems likely to me that by the natural course of things 100 years from now maintaining an extraplanetary base on Mars would be much cheaper and easier, and would disrupt our growth rates much less, if at all. It may be that by acting now, it would take us 200 years to create a self-sustaining population on Mars, whereas if we wait 100 years, we'll be able to get something up and running in just an additional 50 years, thus better insulating us from disaster (consider that until the Mars colony is completely self-sufficient, it will likely be wiped out by any disaster on Earth, even disasters that aren't a real threat to our species, as long as we don't have enough surplus wealth to sustain an expensive Mars colony).

Sure let's forget about all other examples of technological progress and point to the sell of a startup as a key indicator of modern day progress

Deceleration from what velocity? That of the 1800s? the 1900s? It seems obvious to me this isn't the case.

This is plain silly. "Solar wind" is absolutely no danger to people on the surface of Mars, at all.

http://www.mars-one.com/faq/health-and-ethics/how-much-radia...

"Solar storms are not dangerous to humans on Earth’s surface. These storms are awesome to contemplate, but they cannot harm our human bodies as long as we remain on the surface of Earth, where we’re protected by Earth’s blanket of atmosphere. Remember, there’s every reason to believe that storms on the sun have been happening for billions of years, since the sun and Earth came to be. If that’s so, then all life on Earth evolved under their influence.

What is the danger of a solar storm in space? Very high-energy particles, such as those carried by CMEs, can cause radiation poisoning to humans and other mammals. They would be dangerous to unshielded astronauts, say, astronauts traveling to the moon. Large doses could be fatal."

http://earthsky.org/space/are-solar-storms-dangerous-to-us

Mars lacks a magnetosphere.

Earth's magnetosphere could disappear today, and whatever other chaos that causes, Earth's atmosphere would still deflect most charged and uncharged particles from space. The magnetosphere has no effect on the uncharged particles, remember.

The moderate-level long-term cosmic radiation will probably be an issue for colonists, making cancer quite likely for anyone spending 40+ years there.

But instead of saying that, you decided to say:

> This is plain silly. "Solar wind" is absolutely no danger to people on the surface of Mars, at all.

instead. So, uh, I guess you win one Internet for pedantry.

Additionally, at one point along our exponential growth curve, it became inexpensive to dedicate enough research funding to the creation of a digital music player that we got the beginnings of modern MP3 players. I don't see any reason why going to Mars will be particularly different - it's not like there's no overlap between the technology we need to survive there and the technology we need to thrive here.

Getting a population to Mars would be a considerable expense. Keeping them there would have to be free, or the whole thing isn't ready to go yet. Free, that is, in the sense that the whole population is capable of being self-sustaining. If they aren't then the whole "backup human race" idea fails, if Earth dies and then they inevitably die too.

Also, there's no point in sitting back and just waiting for something to happen. It doesn't work to discourage all the specific people who want to invest in the tech from doing so because "someone" will get to it eventually.... "someone" won't if all the interested parties have been counseled to wait for "someone" else to do it.

Putting aside the offsite-backup-for-humanity angle, if it becomes practical to send a significant population to Mars, wouldn't it consequently also be at least as practical to keep sending them stuff?

I have always assumed that any Martian colony would be receiving regular supply dumps from Earth for decades or centuries before becoming self-sustaining.

Not really, not with the expense that would entail. The only viable Mars colonization model assumes the creation of most needed commodities out of local resources.

> I have always assumed that any Martian colony would be receiving regular supply dumps from Earth for decades or centuries before becoming self-sustaining.

It such a colony required substantial supply dumps from Earth, and if this were anticipated in the planning stages, the colony wouldn't be funded in the first place. Transferring anything massive from Earth to Mars is extraordinarily expensive and will continue to be so.

This is extraordinarily expensive, yes, but not out of the realm of question. Saffron is $1,100–11,000/kg, for example.

A colony of 1 million is also very unlikely to have the ability to produce pharmaceuticals and high-end chips which are cost competitive with Earth. Assuming a core weighs 20 grams, the shipping cost is $40.

Of course, this is as public-private partnership. Assuming the real cost is $2 million / immigrant gives a shipping cost of $200 - which is still going to beat the cost of starting and maintaining a set of fabs on Mars.

If Musk is right about the cost, then there will be goods exported from Earth to Mars. If Musk is wrong about the cost, then it's not practical to send a significant population to Mars.

Well, cost-competitive with products imported from Earth, which is an easier standard to meet. Maybe Mars colonization will finally bring 3D printing into its own. People will discover they need an exotic part, so they radio earth for -- not the part itself -- but a diagram of the part, delivered by radio. Then they print it using local raw materials.

As to high-end technology, I think at least at first, the colonists will have to do without a ready supply of integrated circuits. They will have to live in a pre-iPod society for a while, more's the pity. :)

I can imagine an interview room twenty years form now -- a candidate says, "I'm willing to put up with many discomforts, even danger, to be among the first to colonize Mars." A few facts are delivered, then, "What? No cell phones? Are you serious?"

> If Musk is right about the cost, then there will be goods exported from Earth to Mars. If Musk is wrong about the cost, then it's not practical to send a significant population to Mars.

With a degree of resourcefulness by the colonists, I think there will be local exploitation of raw materials and production of needed goods, relatively quickly. Especially if every idea for small-scale local production, like 3D printers, is taken advantage of.

Anything appropriate for a Mars colony would be as appropriate for overwintering in Antarctica, or for the residents of various islands from the Cook Islands to Saint Helena, or similarly isolated place.

Presumably there's a cost-benefit matrix. Denser processors mean less needs to be shipped to Mars, but the harder it is to make locally. You mention "pre-iPod society" as if digital entertainment was the main loss. Pre-iPod also a pre-GPS-everywhere society, and pre-Internet-of-things society. Wifi embedded in every device may make a colony more likely to succeed. I would like a faulty CO2 scrubber to be able to notify the colony network, and wifi is cheaper than building cables. With that network in place in order to survive, a mobile device with phone-like communications is likely not only trivial but essential.

Regarding 'resourcefulness' - that's besides the point. A self-sustaining colony requires a huge number of people. (Who builds the fab units? Who are the doctors? Who repairs the sewage systems? Who takes care of food and O2 production? Who spends the 20 years to educate the next generation to the PhD level needed to support a high-tech frontier?) http://www.sciencedirect.com/science/article/pii/S0094576513... estimates 40,000 people, which is a shot in the dark for the minimum size. Musk proposes 1 million; his cost numbers don't work out with only 40,000 people.

Any rocket technology which is cheap enough to deliver 40,000 people for a self-sustaining colony on Mars is one which can support trade between the planets. Someone will want saffron. Someone will want white truffles. (Both are already in the $1000s/kg range.) Maybe not the first generation, who all volunteered, but surely the second.

There's a difference between "can be self-sustaining" and "is self-sustaining." A successful Mars colony would engage in trade with Earth.

Some predictable and unpreventable existential crisis might do that, but I can think of few cases where setting up a dozen similarly sized self-sufficient colonies on the Earth (in Antarctica, buried in the middle of the Great Victoria Desert, etc.) wouldn't be a better strategy with higher chance of success.

Other first world problems include:

* Decarbonizing energy and achieving a sustainable energy and transportation infrastructure. (Not coincidentally Elon's also doing work in that area.)

* Curing the diseases of aging and achieving significant life extension.

* Augmenting and enhancing human intelligence.

* Closing natural resource cycles to achieve a much higher rate of recycling and lower overall resource consumption.

* Discovering new positive-sum solutions to the conflict between economic liberty and economic fairness / wealth distribution. These problems are probably game theoretic in nature and will probably require thinking at that level.

* Unifying quantum mechanics with general relativity and unlocking a comprehensive and coherent understanding of ultimate physical reality.

* Achieving a true holistic comprehension of the language of genetics and inheritance that goes far beyond "a gene for X" correlation-fishing.

WWF just released its annual report. Shocking. http://www.worldwildlife.org/publications

As far as I know, humanity is dependent on several crops and a few animals(cows, pigs, and chickens) for our survival.

Indeed, missing knowledge is most dangerous. That's why education is so important. Start by reading the WWf report ;o).

It's almost impossible to live in balance with nature in today's society

To me, that is an indication that we need to change today's society, not a justification for doing nothing.

That depends on how one defines "balance with nature". We're just a species competing for resources with other species. To argue that what we do is anything but a normal survival strategy is to buy into a supernatural role for human beings on planet Earth. In fact we're a natural species, and we follow entirely predictable patterns of natural selection.

> Even retreating into the wilderness and living off the land just makes a big artificial farm-shaped hole in the wilderness.

And? Is a farm distinct from an anthill, or is it a natural variation? We may see ourselves as exceptional, as separate from nature, but nature certainly doesn't see us that way.

In many cases it has long term detrimental consequences far in excess of the short term benefit of the economic activity causing the damage. Personally, I'm an advocate of factoring in the environmental costs of our economic activities and taking those costs into account. However the idea that we can live in balance without having an impact on the world around us is a fantasy.

Well, although I am a scientist and traveling to conferences is a habit that everybody does, I could limit my number of flights to one last year.

The point is, we don't need to fly. Conferences are boring, we have videocons. It is just a fashion to spend vacation overseas (even over the weekend). It is just the aviation industry screwing our minds.

"It's almost impossible to live in balance with nature in today's society"

You certainly have to be smarter than a hunter-gatherer to do it. But that's what makes us different.

Of course it's shocking. This tells you very little about how good or bad things actually are. WWF will always say that right now is the last chance to save life on earth unless their viewpoint is given high-status.

I happen to believe that if everyone played music together once a week, humanity's future would be preserved through the effects of mutual cooperation, trust and survival information communicated through music.

Clowns probably believe humanity's future is ensured through everyone laughing at squirting flowers and Bill Gates probably believes curing malaria will ensure our future.

These are all overly-biased, myopic views which when stretched to the point of determining the fate of the entire human race become equally absurd. They're little more than attention-seeking plays.

No offense, it sounds like "deep" bullshit. You had yet to explain why Musk's views are myopic.

And curing malaria ensuring our future? Do you really expect Bill Gates to believe that? It seems far more likely that he see malaria as unnecessary harm and sought to eliminate it.

I'm a software engineer and I strongly believe that if every humans on earth worked all together with a single goal in mind, space exploration and conquest, instead of spending millions on wars (as an example) we would already been on Mars, or close to it. I kinda feel ashamed when I think about it, I would prefer to work into something which have a bigger impact on the humanity future, and that what I want to do later in my life.

Musicians, clowns, video games, movies, are all entertainments, it adds pleasure into doing things but don't contribute in the to the goal of a greater knowledge of the universe. (you could argue that if X wouldn't have listened to Y song he wouldn't have discovered Z, and I would agree).

He means that the reality of what is important for the future of the human race is subjective based on the biases of the person making the statement.

To draw a parallel, the most important legislature to next get pushed through Government is different for every lobbyist, because having different goals implicitly makes the meaning of important relative.

Colonizing Mars? Sure, that's more about grabbing headlines. But saving lives from Malaria for Gates isn't about generating hype, or boosting stock prices ... it's genuinely about humanity and doing what's right (because they have the means)

Still I agree that we tend to see things through our own lenses. Maybe evolution has something really amazing planned for bonobos, but we're too stubborn to die off.

That guy preserving music or that guy curing malaria or that guy trying to get humans onto another planet? They may be in some sense wrong, but if they all succeed we will have great music playing among the non-malarial population on Mars in a century. I don't see what's not to like.

Why do you think that? Bill Gates has certainly never said anything to that effect.

> Clowns probably believe humanity's future is ensured through everyone laughing at squirting flowers.

This seems less ridiculous than the Malaria one, but I would still be surprised if anyone I knew said something this silly.

The myopic views you are projecting onto other people may exist in a few, but I don't think that they are common.

"Every time I see Jeff, I ask him why he's not doing more in space."

"Our [SpaceX] competitors are not Paul Allen and Richard Branson, but Boeing, Lockheed, and the big aerospace companies. I'm really glad to see all the activity in entrepreneurial space and hopefully this heralds a new era of space exploration with price and quality improvements similar to other technology arenas."

    "A billion years will give us four more orbits of the Milky Way
    galaxy, any one of which could bring us into collision with
    another star, or a supernova shockwave, or the incinerating beam
    of a gamma ray burst. We could swing into the path of a rogue
    planet, one of the billions that roam our galaxy darkly, like
    cosmic wrecking balls. Planet Earth could be edging up to the end
    of an unusually fortunate run."

(I'm not at all dismissing exotic existential risks. But is this a solution, or is it "We must do something. This is something. Therefore, we must do this.")

[0] http://blogs.discovermagazine.com/badastronomy/2011/05/19/ar...

[1] https://en.wikipedia.org/wiki/Gamma-ray_burst#Energetics_and...

[2] http://arxiv.org/abs/0903.4710

[0] https://en.wikipedia.org/wiki/Doomsday_argument

On Mars, the best we can expect is a crude habitat, erected by robots...US colonies from Roanoke to Jamestown suffered similar social breakdowns, in environments that were Edenic by comparison...For all we know, revolutions in energy, artificial intelligence and materials science could be imminent. Any one of them would make human spaceflight a much easier affair.

The only thing that makes me feel better is that Musk seems to not be thinking through it all the way...and I mean that in the best way possible. At this point, from what I can tell he's still an evangelist and isn't putting resources to solving the minutiae of how to live on Mars.

He is so laser focused on the logistics that he likely wants to leave practicalities of the biology problem to someone else.

The only way we're going to start colonizing Mars is that someone focuses on making rocket cheaper.

We can wait, but we had waited for several decades after the Apollo landing. Since then, in some way, technology had stagnated.

We cannot ship all of if there, we can send the building blocks then use those to mine, process, and construct, what is needed. A viable colony must operated independently and not rely on Earth for its survival

With current limitation in AI and robotics, sending robots is not really good use of resources. They are inflexible and if something broke, it may be difficult to fix on the spot. Don't forget that teleoperation from Earth takes minutes, and by then, situation would have changed entirely.

You're better off sending a shit ton of materials to Mars, with many redundancies so that a colonist can survive for years without going home, until the next resupply point.

Teleoperation with the colonist nearby is a good idea though.

We assume too much about the future. Technological progress is not inevitable, as we had seen with the space programs.

Besides, when the time come, it's not like the plan won't be revised.

You can launch lots of things to Mars and have them sitting around waiting on the surface for the humans to show up.

“What if Columbus had been told, ‘Chris, baby, don’t go now. Wait until we’ve solved our number one priorities — war and famine; poverty and crime; pollution and disease; illieracy and racial hatred—and Queen Isabella’s own personal brand of ‘interal security’‘” – W.I.E. Gates

Humans are capable of doing multiple things at once. Some people working on space travel doesn't preclude others from working to slow (can we even reverse at this point) climate change.

Or do we get fuel on Mars?

[1] http://goldprice.org/gold-price-per-kilo.html

[2] http://space.stackexchange.com/questions/1989/what-is-the-cu...

If we cared enough to end war I would have hoped we would have ended slavery as well.

Also, there's nothing special about Europeans. If the explorers had been from China via the eastern region, the scenario would likely have played out the same way. Up until modern times, most warfare was either about power, e.g. preventing a rising rival or conquering a falling power, or extraction, where the goal was to remove as much wealth as possible in as short a period of time as feasible. Given human history, extractive warfare against the native population by militarily superior Eurasian invaders would be the expected outcome.

So no, I doubt the lack of Columbus's voyage would have done more than set back the timetable a bit, or changed the players. Societies in Eurasia just had too much of a biological (germs from city density), technological, and organizational advantage.

That said, what's unique about the Mars colonization idea is that we may have a limited time window in which to try it. Given that our chief sources of energy are non-renewable, we are living in a golden age of cheap production. We haven't so polluted space for Kessler syndrome to lock us in. We even have precociously advanced space technology due to the huge boost from the USA-USSR space race.

Right now we're watching our space programs atrophy. There may be a limited amount of time to get a viable off-world colony going.

Sure, right now we're talking about an Antarctica-style bunker mission, the Martian equivalent of Apollo. But to get to a true space colony you have to start somewhere.

Crew carries all diseases endemic to their native land. Crew travels to foreign land. Now foreign land has all diseases endemic to native land, and crew has some diseases endemic to foreign land. (The all/some asymmetry I get from the assumption that a crew of nothing-to-lose sailors are likely to be better-traveled than the tribe that inhabits their landing site.) Some or all of crew dies of these foreign diseases while in foreign land. Whatever portion of crew returns to native land carries foreign diseases that are survivable from a no-immunity starting point. Population of foreign land has all native diseases, including those such as smallpox which will leave alive but a fraction of a population that has no immunity.

Is the right time to try colonizing Mars? What would be the chance of success given our current technology level? I think those are very relevant question that needs to be discussed with facts rather than quotes.

Was it that reasonable at the time? Granted no one really thought they'd fall off the edge of the world and we did have long-time-at-sea experience, even if near the shore.

Compared to today: the US has a decent track-record of landing on Mars. We have the tech to do it. We have a decent amount of experience in LEO. What makes a manned-Mars trip more or less absurd than Columbus' first trans-Atlantic voyage?

Is it simply that Columbus hoped to be profitable by sailing to the East and we don't have that same expectation of a Mars mission?

Going for a 10 meter dive isn't a good enough testimony to over a 1km deep dive.

Columbus lucked out to have the political will to make his colonies work, mainly via the brutal large-scale warfare against the natives Isabella and others were more than willing to fund, largely to acquire natural resources and for further empire building.

SpaceX doesn't even have the ability to go. Comparing Columbus's low hanging fruit to Mars colonization is pretty unconvincing, especially on the economic front where colonization of the Americas was deeply profitable almost instantly, while Mars would be a welfare state.

And our ability to go to Mars isn't imaginary either (even if we haven't sent people).

Also, I've never seen literature claiming the Norse expeditions were very well known. (Not saying that doesn't exists, just that I haven't seen them.) > SpaceX doesn't even have the ability to go. Comparing Columbus's low hanging fruit to Mars colonization is pretty unconvincing, especially on the economic front where colonization of the Americas was deeply profitable almost instantly, while Mars would be a welfare state.

It wasn't know that America would be profitable. Granted it was thought spice trade would be.

The point of the quote is that Europeans chose to take on an expensive exploratory endeavour (with the hope of a profit) even though they had issues at home.

This is misleading, because the early explorers thought they were sailing to India, not to a new world that was unknown at the time. India was certainly regarded as profitable, and was the impetus for the early voyages. BTW this is why native Americans are called "indians".

Indeed, the main reason Columbus was mocked because his plan was rather extreme on its face (and, despite the fact that he never admitted this, was a complete failure for exactly the reason it was mocked, even though it happened to produce benefits completely unrelated to its intended purpose) because not only the shape but the size of the Earth was well known.

> Columbus lucked out to have the political will to make his colonies work

Columbus lucked out in running into a large land mass well short of his desired goal (which he never admitted that he hadn't reached, which is why the lands of the New World are now commonly known by a name derived from that of an Italian map maker and not their "discoverer".)

Columbus's plan was no less absurd than SpaceX's, and is only seen as successful in retrospect for accomplishments unrelated to its intended purpose.

Putting people on Mars to save humanity is - in my view - a bad reason. There are better reasons to travel to mars.

As an alternative to possibly engendering environmental apathy, imagine a scenario akin to the Cold War, except that one of the superpowers has a million citizens on Mars, and the other doesn't. Does MAD still apply, or does the interplanetary superpower suddenly becoming all the more willing to watch the world burn?

Or do you just get a third superpower less invested in the fate of home planet?

No one born on Mars is going to have any reason to care about what happens on Earth any more than the people of one continent care about the day-to-day life of people on another continent.

  > No one born on Mars is going to have any reason to care 
  > about what happens on Earth any more than the people of 
  > one continent care about the day-to-day life of people on 
  > another continent.

What on Earth (literally) could threaten the Martians once they've become self-sustaining? The only time they would care about what happens on Earth from anything more than a pure curiosity standpoint is when they are dependent on Earth for survival. After that point, until we develop ships fast enough that we can get to Mars as fast as we can get across the Atlantic and trade once again becomes an issue, who cares what happens to Earth? Mars is just fine.

Are you personally currently environmentally apathetic because you know somewhere there are some unspoiled mountain lakes that are still hardly touched by the hand of man?

Are you personally unconcerned about the possibility of your home being nuked because thank goodness Alaska will probably survive?

You hypothesize a very bizarrely precise self-interest that very suddenly gives way to complete wild suicidal abandon at a very precise point. I'm not at all convinced what you've ordered up here can exist.

Self-interest isn't going anywhere.

Except, we still do care if their water is toxic and if the air conditions are poor. The same sort of empathy will apply to people on other planets as well. Even though a heavily polluted other planet doesn't directly affect us in the same way that a heavily polluted Earth affects us, we are currently pretty well isolated from the extreme conditions in Shanghai and yet we still care what happens there.

Furthermore, because of the large costs of shipping between planets, most of the things causing pollution on one planet is probably benefitting almost exclusively the residents of that planet.

Moral hazard is an interesting concern but I don't think that it's going to end up being a severe problem.

http://www.nytimes.com/2014/09/25/world/asia/25climate.html?...

Tons of CO2 emitted per capita:

United States 16.4

China 7.1

https://en.wikipedia.org/wiki/List_of_countries_by_carbon_di...

I feel like China can do a lot more.

  China         1,367,030,000
  United States   318,827,000

They do a lot more, you just saw a piece of the information.

The point is that if the Chinese had the standard of living that Americans have, everything would shoot through the roof. And considering that they don't, there's great potential for it to go wrong.

The whole "China shoving CO2 into the atmosphere" could just as well be stated "Americans driving large SUVs that dump CO2 into the atmosphere". It doesn't matter, we've all got to do our part.

A large SUV won't dump as much CO2 as industrial manufacturing, for example.

1. Members of the OECD must cut down on CO2 emissions. They far exceed China's emissions. Totals are what matter, and the OECD certainly has a higher total than China. China can't do anything so long as the OECD keeps pumping CO2 freely into the atmosphere.

2. North America must cut down on CO2 emissions. They far exceed that of South Asia.

We can think of it this way. A certain standard of living requires some degree of pollution + cost. It is not productive to ask the other guy to endure a poorer standard of living while you live large just because he, as an individual, lives in a place with more individuals. You can ask for that, but it isn't going to happen.

The distinction is important, because coal is seen as a cheap way of feeding China's relentless appetite for growth (or more specifically, the appetite for the perceived advantages brought by this "growth" to those who are in a social or political position to benefit from it.)

No words, just data: http://upload.wikimedia.org/wikipedia/commons/f/f4/Carbon_Mo...

http://joyreactor.com/post/351870

There is a pretty clear body of evidence that humans do not expend resources on something they don't value. And the question of whether or not the value of the planet would change with the expansion into space is a reasonable one to ask.

I believe what is posited is not precise self-interest so much as a reevaluation of risk and its concomitant change to the cost of failure.

As an example, one might speed down the highway with a perception of low risk of being caught, but that behavior might change if a sign appeared that said "speed limit enforcers are on duty." So in the presence of the new information a re-evaluation of the risk of being cited is undertaken and behavior may (or may not) change.

The question posed is whether or not the value calculus that currently drives the environmental and military engagement thinking of the world today, would be altered by the existence of a stable 'somewhere else'. That is a general question and not one that turns on precise self interest.

I do not believe such a settlement would change the value equation, as it would not apply to a large enough fraction of the current residents to change the calculus. Now I also would not expect the prototypical someone who was born and raised on Mars to feel particularly motivated to change what folks on Earth were doing, just as non-Chinese do not feel moved enough to intervene on the actions decided upon by that country's government. They might "care" and have some empathy for the resulting negative outcomes, but they would be insufficiently empowered to actually act.

And even with a million people, Mars would be a long way from resupplying or repopulating a major country composed of hundreds of millions of people.

Creating new habitable space will be expensive it will be like living in a submarine or an Antarctic base during winter. Forget about having large space for entertainment like a football stadium or a theater. I think that after a few months of that regimen people will start to appreciate more life on good old Earth.

The first humans to live on Mars will almost certainly already have gone through many months/years of rigorous on-Earth testing to ensure they don't go stir crazy. Indeed, MARS-500 is a wonderful, recent example of research into this area.

By the time 'ordinary' humans get to Mars, there should be a reasonable amount of infrastructure (power/water/heat) already in place to support a population.

As for entertainment, I don't imagine that football stadiums or theatres will be required in the future if everyone had access to something like an Oculus Rift.

It may, in fact, require more resources for one person to live on mars than one person can produce with our current (or near future) level of technology.

I think just building the energy infrastructure to do energy expensive things like make steel or silicon ingots will be very difficult. Not to mention that there is no source of petroleum on mars, so plastics are going to have to synthesized using other materials. The difficulties are legion once you get down to the details.

The weak gravity is the real killer, colonists bones would decay, the calcium would leach into the bloodstream causing serious health issues. Muscles would atrophy. The colonists' sense of balance and motion, evolved to Earth gravity, would be constantly disorienting. Low gravity has a lot of negative health effects.

Mars also has nothing like the Van Allen belt, it's bombarded with radiation that colonists would constantly need to be shielded from.

Mar's atmosphere is poisonous to humans, and has a much lower atmospheric pressure, so colonists would need to have a constant protective bubble protecting them from the world they were on.

Mars hasn't got liquid water. There is water there, but it would require a lot of energy to get it to the point of being usable.

Energy is another issue. Solar energy could provide some energy, though it'd be massively expensive to get enough arrays to support a colony with the required infrastructure. In theory they could create some kind of nuclear energy plant, though the logistics of transporting that to Mars and maintaining it are staggering.

The psychological impact of taking an animal evolved to live in Earth conditions and put them in a completely inhospitable environment deeply dependent on a very complex and expensive infrastructure, with disorienting gravity, health decay, very limited variety in food, and other likely spartan living conditions a Mars colony would be completely hellish for most.

There may be ways to manage these problems, but the millions of dollars spent per colonist to get them there along with the millions spent per colonist to sustain them are a pretty serious impediment. A colony would need to ultimately be economically independent to make it worthwhile. Mars has some resources that might be valuable to Earth, but whether they'd be viable to support a colony needing such an expensive infrastructure to survive isn't a guarantee. Would humanity be willing to pour trillions upon trillions into a Mars experiment in the hope that the experiment might work?

Compare http://www.sunsetbeachestates.ca/images/sunsetbeach.jpg with http://i.imgur.com/WxxEt.jpg

Colonists could use energy to get artificial lighting to a decent level, but in a wholly artificial environment it might would be depressing to have no nature to experience. We evolved to like living in natural environments that we couldn't really reproduce on Mars. No oceans, no streams, no lakes, no time in the sun, no natural beauty, it sounds like a horrific nightmare to me.

http://www.wolframalpha.com/input/?i=mars+gravity+vs+earth+g...

The technical issue is not the matter. It's the sheer amount of resources for which the overwhelming majority of the human race will never see a benefit from in their lifetimes.

That said, maybe the technology created to sustain a colony on Mars could be used to clean up the messes we've made on Earth.

Sure. And that would suck. But that's not an argument against boats. Take the bigger perspective. The universe is bigger than you can ever imagine, on any scale.

"The universe is bigger than you can ever imagine" indeed, and I'm not advocating against space exploration. But humans as a species will never venture beyond the solar system; self-replicating robots designed to withstand 200,000 years of space travel might.

The selection process would be pretty draconian at the start and for quite some time. Can you imagine the protests over genetic and medical screening that would preclude a great many from ever being considered?

Transportation to mars is incredibly expensive. Even with reusable rockets refueling on mars (and that would be quite the accomplishment) it would still be incredible expensive to send 1,000,000 people.

Perhaps then we will realise how fortunate we are to have a planet where this is not required and that may cause us to increase our efforts to save earth.

I would agree however that finding a hospitable planet that did not require 'terraforming' would be the death knell for the earth. Mainly because the rich/powerful would see their exit and would happily use all of earths remaining resources to get themselves there even if it was at the cost of most of the rest of the population of earth and earth itself.

Doesn't look like this is available in the solar system. Even the jovian moons MAY be habitable, but living there would certainly not be a pleasure.

Planets around other stars are currently a little hard to reach. Science certainly need more (earth- ) time to get there.

If you're interested in fiction along those lines, Kim Stanley Robinson's Mars Trilogy (Red Mars, Blue Mars, Green Mars) seems right up your alley. I'm about half way through the first book, and it's starting to delve into whether or not the distant, Earth-based powers that financed initial settlement have any ability to actually influence or control the resulting Martian population. Environmental concerns are also pretty explicitly considered. Definitely a fun read.

Survival takes precedence over morality and convenience, that much is obvious. People will violate morals in the name of survival.

The question of saving the environment is not a moral question but one of survival. The irony about it all is, if saving the environment is about survival why do people still don't care?

Ask yourself, "If I care about the environment, if I care about my survival, why do I pollute it by driving a car to work every morning?" The answer is deceptively obvious. I direct you to an insightful article by Garrett Hardin describing a phenomenon known as the tragedy of the commons:

http://www.sciencemag.org/content/162/3859/1243.full

This type of discussion always reminds me of a story Terence Mckenna told (https://www.youtube.com/watch?v=fLikdK8LjmE). To paraphrase, a vine refused to grow onto a branch of a tree in his backyard. One day, while contemplating this unfortunate affair, he witnessed the branch fall off the tree. He realized that the vine 'sensed' the instability. He then thought that the complex ecosystem of Earth might have a similar mechanism and that it might be aware that the Sun will explode at some point in the future, destroying all life. In anticipation for this inevitability, the human race (or another advanced species) was called forth to extend life/consciousness beyond the confides of our eventual death trap.

So why tell this story? What if the destruction of ones home planet is part of the evolutionary process of advanced consciousness? The same way that a fetus must purge itself from the womb or risk death by toxicity. In weird paradoxical way, those that pollute planet Earth might be playing their role as designed.

It's worth noting that I'm 100% for ecologically sound technological advancement and a society that doesn't destroy the environment. But part of me thinks everything is going according to plan, when viewed from a large enough perspective.

The destruction of Earth may be the only way to make humanity successful in the long term - that was the view given in some of Asimov's stories. Or it may just be a way to kill ourselves. The ecosystem as a whole is not an optimized complex system like a vine; it has not been subject to evolutionary pressure. There is no plan; the outcome will be down entirely to luck and our own decisions.

Calling multi-planetary life an insurance policy “for life as we know it,” the 40-year-old physicist/entrepreneur/inventor warned that catastrophic natural or man-made disasters -- such as the planetoid collision that wiped out the dinosaurs eons ago or nuclear holocaust or climate change -- could someday wipe out humankind.

Space exploration “is the next natural step” in the 3.8-billion year evolution of life on earth, he said.

Musk suggested that .25% of the nation's gross domestic product would be an “appropriate” expenditure by the United States on space exploration, which he said is roughly the percentage an individual spends on life insurance. Space exploration spending, he said, should be "much less than we spend on health care, but maybe more than we spend on lipstick." (http://press.org/news-multimedia/news/space-exploration-crit...)

Now, before you start complaining about climate change, gamma rays and comparing him to a disillusioned clown, answer the question: is it reasonable for us to spend more money on space exploration than lipstick?

EDIT: Talk about people missing the point. Keep on hating, just let Musk and people like him do their thing. Luckily, online comments have very little influence on the world.

Like, if really rich people like Musk want to spend that kind of money on it, fine. But otherwise? No, it's not really reasonable to spend more on exploring space than on lipstick, and it's a pretty damn condescending question to even ask.

[1] http://online.wsj.com/news/articles/SB1000142405270230445980...

[2] http://en.wikipedia.org/wiki/Budget_of_NASA

Humans create AI, AI kills Humans.

The problem with creating something, is how do we know how it will judge its creator? The thought of creating another form of sentience scares me on a very deep philosophical level.

In particular, if there are already other advanced races in the universe, is it actually meaningful that new advanced sentience that is wholly unlike us is added to that set of races, simply because of some historical connection to us?

My point is when life evolves, what it evolves from is destroyed in the process. As I represent the lower step, yes I am afraid. Natural Selection is nature selecting the more competitive life form. Nature isn't kind about this if earthquakes, asteroids, super novi, volcanoes taught you nothing.

Have you ever wonder why there is only one member of Homo genius on earth? We killed them all. Our species raped and murdered its way to dominance. We were faster, smarter, and better looking. We out hunted their lands until they starved, we stole any member we found attractive, and we killed them over berry patches and watering holes.

The difference is 5, 10 million years ago. Spears, Rocks, Fists, Feets were simple weapons. Today, we nerve gas, weaponized smallpox, atomic bombs. The best part is, most of those things will barely harm silicon based AI.

I have no reason to believe any other step in evolution would be any less violent then every single step before it. And as I represent the old, I know the point of that step will be rid nature of me.

This is a textbook false dichotomy. Almost everything that is a long term investment falls prey to things which offer marginal benefit.

hell yeah

Or: Earth has a lot of advantages over Mars. Why would you totally diminish your life's possibilities and leave?

Chance of dying -- high. Chance of having children -- low. This is not rocket science, as they say.

Would-be colonizer: I am thinking of relocating the family to Mars for the stunning education opportunities the kids will have -- high average education level in the population, ...

Spouse of would-be colonizer: You make one move to relocate the kids to Mars and you will divorced before your intergalactic shuttle lifts off.

I never see plans to get around this with real-world technology — it's always just hand-waved as something we'll figure out. But it seems like the "letting people live natural lives under utterly inhospitable conditions" part has a lot more to do with ensuring humanity's survival than the Mars part.

Because they don't want to live on underwater cities on Earth. They want to live on Mars.