[NeverEnough]

life on earth isn't sustainable anyway. how can you not be aware of that?

the sun is dying. if humans don't 'develop' enough before then, it is unlikely that any of earth's legacy will be preserved.

[q2]

It takes billions of years for sun to die.

http://www.huffingtonpost.com/david-j-eicher/14-things-you-d...

Moreover, if sun dies, how Mars/Venus will help us? They are in our solar system. Is n't it?

So we need not worry. Moreover if death is natural process, then some alternative star may born by that time. As of now, Science may not be that much advanced to capture new star.

But that won't give a reason to destroy/pollute earth and move on. Can you guarantee it won't happen to Mars or Venus?

It is just fear mongering, nothing else.

[NeverEnough]

mars and venus are the first step. we aren't going to jump out of the solar system on our first try. we will be lucky if we don't have a lot of failures in that endeavor, even after the experience and materials we gain from the solar system.

>Moreover if death is natural process

humans are also a natural process.

>some alternative star may born by that time.

you mean a new star is going to come to our solar system before the sun dies? I think I must be misunderstanding. If not, that's asinine.

I don't really get how you can call it fearmongering. who is supposed to be afraid? most people only think as far ahead as two generations. the only people who are disturbed by your strange brand of environmentalism are people who think hundreds of years into the future, ie other environmentalists.

http://en.wikipedia.org/wiki/Timeline_of_the_far_future

your billions figure is also a gross overestimate. our timeline is not so generous.

and don't forget that life took (actually) billions of years to evolve. what are you trying to protect on mars and venus that is more important than that?