The world is supposed to end in 5 ways:
1) Nuclear War
2) (What you said about the chunk of rock hitting earth)
3) Polarity is supposed to vanish (Without polarity...nothing will work [aprox])
4) Sun gives out and blows up
5) Black Hole
They say the most almost possible way of earth dying is a Black Hole..which is supposed to occur in 2 thousand years. The meteorite is a known fact, but no need to worry; TEAM AERMICA: WORLD POLICE will protect us!. Polarity is only gonna give out some day.....Sun blowing up...not for another million years they say.
1) I think we've learned our lesson in the cold war, and if not: nukes can only cause a nuclear winter and they've invented winterclothes for that....
2) why does everyone say: oh they'll just nuke the rock and the problem goes away.... thats pretty lame considering that an asteroid weighs millions of tons, u need a big dang nuke to blast those rocks..... but anyway if an asteroid hits us (0.3% remember?) that will not destroy us either. the dinosaures just died because they were coldblooded and that asteroid caused a small ice age when it hit.... since we are warmblooded (except for schoolteachers) we dont have to worry....
3) THAT IS TOTALLY REDICULOUS BULLCRAP, because the earths polarity is being influenced by the sun and the moon. to remove earths polarity, you would have to blow up the moon AND the sun, and if we do that, we have solar plasma to worry about. by the way, i dont understand what that polarity crap is about anyway... if it's gone, so WHAT? compasses wont work anymore? i dont see how that is going to lead us to extinction.....
4) by that time we will have colonized the galaxy anyway, its only 4.3 lightyears to the nearest star you know....
5) black holes can only be created when a star is destroyed and if the sun does that: see 4)...... hey wait that sounded strange: see 4)..... C4 anyone?
i've got my own theory of the worlds end: in thirty years, value of oil and gas will become so high, that all countries will go to war for territorial control of the last oil and gas pumping stations. humanity will be out of power and the majority of humankind will be slaughtered by each other. then an alien race will come to earth to abduct the last human survivors and the evolution on earth can start over again, so what we need to do to save the human species, is we need to persuade all americans to commit suicide, because they use over 80% of the earths resources......
(ok i agree, the part about the aliens might be a little radical, but about the americans:
DROP DEAD BUSH, DROP DEAD!!!!!!!!!!!!!!)