Current Affairs Czech scientists: extinction of dinosaurs was caused by asteroid collision
65 million years ago a huge cosmic body crashed into the Earth, causing large fires all over the globe. The sudden change of climate wiped out most of the planet's vegetation and species, including the dinosaurs. Scientists have long argued whether the Earth was hit by a comet or an asteroid. Until recently, chemical evidence indicated it was a comet. Now, however, a team consisting of two Czech and one US scientist has come up with new facts.
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