| o_O.Q said: sounds more like a sham to bring in a world government if you ask me as someone has already mentioned... there's loads of uncolonised land on earth already... how exactly is it beneficial to ignore that and move to another more inhospitable planet and try to spend far more effort developing that? people have been watching too much alien covenant |
Well unless you mean building cities in deserts, then there is only so much room to grow. Building on useful farmland is not a good idea. Cutting down green space is a bad idea for so many reasons, but acceptable to a certain degree for things such as creating more farmland.
Unless we're going to start making new landmass on a massive scale being reclaimed from the bottom of the oceans, with the newest dredger tech, then urban sprawl into rural area's can only go so far before it becomes a major problem. Many more skyscrapers would also help a lot with population growth, but would create another problem about convenience, transportation and congestion.
The "what if we get hit by an asteroid/meteor" question is relevant as well. Right now, we can only detect them out in space if they are a certain size. We are working on new tech that will allow the detection of smaller bodies, but this takes time. All it would take is a giant body breaking into smaller bodies, just small enough to go undetected, and have them pummel the Earth. We won't know they are coming, and even if we did, how would we stop all of them?
Having another planet to call "home", or just be a place the species can continue on, just in case, is not a horrible idea. Not the greatest idea ever, but it has merit.
