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Southern Hemisphere recovered faster from dino strike
Life in the southern hemisphere appears to have recovered more quickly than expected from the asteroid strike that wiped out the dinosaurs.
In North America, it took 9 million years for ecosystems to recover.
However, in South America - further from the impact - insect life bounced back after about 4 million years, according to scientists.
US experts studied fossil leaves for insect damage at a site in Patagonia, at the tip of South America.
Lead researcher Michael Donovan of Pennsylvania State University said: "Here we're showing in Patagonia - far away from the asteroid impact site - insects recovered much quicker than what we have observed in the past from the western interior of North America.
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