The Friends of Charles Darwin

It is unlikely humans exterminated the immense marsupial Diprotodon and other huge beasts that once roamed Australia in a short killing spree. Two new studies refute the theory that humans moving on to the continent more than 45,000 years ago took out its megafauna in a 1,000-year "blitzkrieg". The studies suggest instead a more complex pattern to the extinctions. Their authors say humans certainly had a role but it was not as important as the period's climate changes.