The Damage We've Done

 We need to go to Mars. Not for a footprints-and-flags mission, to take some photos and return with a few Mars rocks, but to colonise, and to stay. It won't even be as expensive as most people think. The SpaceX company can launch a normal satellite today for ten times less than NASA did it with the Shuttle. It's possible and affordable.

 Still, it's a big project. People will probably die to achieve it. So why bother?

 For me, the main reason is that we can't save Earth's environment. That should be obvious by now. For all the international deals, right back to Rio in 1992, the ecosystem is still being destroyed. Forget climate change, even. The bigger problem is the simple destruction of species and habitats, and we can't stop it. Even when we try we just cause a new disaster. Bio-fuel was meant to reduce fossil fuel use, but instead it only smashed the forests where orang-utans live, as land was converted to farms to grow the bio-crops. Now orangs face extinction. We tried to be good, and instead just shifted the disaster to another place.

 The problem is too many people. Everyone born needs - at a minimum - water, food, clothes and a roof. That's before we think about jobs, or cars, or healthcare and all the other basic needs. All of that means humans have to exploit the Earth a little bit more. Globally we now use more than 50% of the fresh water first, before any other species. That means everything else put together has less water than humans, which is a recipe for catastrophe. We make 100 million new pieces of clothing every year, which works out at a bit more than 12 per person - not a huge amount, but the total is enormous. It's very hard to see how these numbers can be reduced without a population drop.

 But that's not going to happen. Nobody will vote for a government that plans to limit births. Even people who know the risks won't. I know a man who understands the risks of over-population, is dedicated to Green issues - and has 4 children. That's how the world reacts to this; they agree we need to reduce human numbers, but then assume the need doesn't apply to them. And the result? The UN used to say world population would be 9.5 billion by 2100. Then 10.2 billion. Now it's 11.1 billion, because birth rates are just not dropping very fast. And remember, we need population not to stabilise, but to go DOWN, or sheer pressure of numbers will see the world driven to ecological disaster.

 And so, Mars. It's so far away that large numbers of people will never be able to move there, however advanced technology might become. But we can move trees there, and animals, and build copies of the habitats on Earth. The various species will survive, and perhaps in a thousand years we could re-seed the Earth, and repair some of the horrendous damage we've done.

 Humans don't learn. Sumerians, early Chinese, Maya, the first peoples of North America... they all pillaged their environment until it collapsed. This time we're doing it world wide, but we have a way to save something from the wreck. In doing so, we can save ourselves too.