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We must colonise Space if we are to survive!
^{...and we need to do it in the next 200 years}

This is the opinion of British astrophysicist Stephen Hawking (68), who believes that for mankind to survive we must leave Earth and colonise Space. The oxygen in our atmosphere is steadily decreasing.

It isn’t just nature which is a danger to us; mankind itself is also a huge threat to our survival. Hawking told internet platform ‘Big Think’ that the growth in the Earth’s population and the limited resources available are becoming more and more of a threat to humanity. There are also serious risks of a nuclear catastrophe.

More at: http://www.bild.de/BILD/news/bild-english/world-news/2010/08/11/stephen-hawking-earth-fears/we-must-colonise-space-if-we-are-to-survive.html