The world is warming at 170 times its natural rate, thanks to human action and carbon emissions.
While warm-blooded animals could adapt to changing temperatures because they regulate their own temperature, cold-blooded dinosaurs could not.
A race for cosmic souvenirs has begun after scientists have said there are still many pieces of the meteorite that fell to earth in Russia last week.
Russian authorities halted their search on Sunday for the meteorite that struck the Urals, leaving about 1 200 people injured.
A meteor streaked across the sky above Russia’s Ural Mountains, causing sharp explosions and injuring more than 400 people.
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/ 22 November 2009
The ”greenish, bluish” light over Johannesburg on Saturday night was almost certainly a meteor, an astronomer said on Sunday.