News tagged with mass extinction

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New technique unlocks secrets of ancient ocean

Earth's largest mass extinction event, the end-Permian mass extinction, occurred some 252 million years ago. An estimated 90 percent of Earth's marine life was eradicated. To better understand the cause of ...

Oct 11, 2011
4.8 / 5 (10) 0 | with audio podcast

Impact mitigation

The save-the-Earth rehearsal mission Don Quijote, commissioned by the European Space Agency, is planned to test the potential of a real life-or-death mission to deflect a mass-extinction-inducing asteroid from a colli ...

Aug 15, 2011
4.8 / 5 (10) 14

Nemesis is a myth

Danger looms from out of space: asteroids and comets are a threat to our planet. The history of Earth has always been punctuated by cosmic catastrophes. Several studies have claimed to have found periodic ...

Aug 01, 2011
4.2 / 5 (6) 6 | with audio podcast

Oceans threatened by mass extinction

(PhysOrg.com) -- An international panel of marine scientists has warned that the world’s oceans are at risk of entering a phase of extinction of marine species unprecedented in human history.

Jun 22, 2011
3.5 / 5 (10) 8