Air flows through lizard lungs in one direction, a finding that may prompt a rethink about how some species evolved following Earth`s biggest mass extinction, a study said on Wednesday.
Researchers have suggested that the mass extinction at the end of the Permian period, about 250 million years ago, was triggered by contemporaneous volcanic eruptions in Siberia.
Scientists believe that a set of gigantic volcanic might have eruptions resulted in the disappearance of half of earth`s species 200 million years ago.
For five million years after the worst mass extinction in Earth`s history, much of the planet was simply too hot for anything to survive, researchers have revealed.
Dinosaur die out might have been the second of two closely timed extinctions, according to a new University of Washington research.
Gamma ray burst, which occurred in a colossal group of stars called a globular cluster may have triggered a mass extinction on Earth 440 million years ago.
Day in Pics: 5th May
Showbiz World - May 5, 2015
62nd National Film Awards