5
Mar 10

Asteroid killed off the dinosaurs

Source: Cambridge University

Artist's impression about dinossaur extinction.
Credit: Nicolle Rager Fuller, www.sayo-art.com, copyright 2009.

The Cretaceous–Tertiary mass extinction, which wiped out the dinosaurs and more than half of species on Earth, was caused by an asteroid colliding with Earth and not massive volcanic activity, according to a comprehensive new review of all the evidence.

A panel of 41 international experts, including UK researchers from Cambridge, Imperial College London, University College London and the Open University reviewed 20 years' worth of research to determine the cause of the Cretaceous-Tertiary (KT) extinction, which happened around 65 million years ago.

The review, published in this week's Science, shows the extinction was caused by a massive asteroid around 15 kilometres wide slamming into Earth at Chicxulub, Mexico. (read more)

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