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mass extinctions

Methods to go from consuming mosquitos in Siberia to main a NASA mission

Enlarge / Lindy Elkins-Tanton, second from left, and colleagues in Siberia. (credit score: Scott Simper / ASU) Lindy Elkins-Tanton is a Siberian-river-running, arc-welding, code-writing, patent-holding, company-founding, asteroid-exploring, igneous petrologist professor. At numerous instances, she has been a farmer, a coach

Researchers suggest a supernova triggered the Late Devonian mass extinction

Enlarge / The Cassiopeia A supernova which left this remnant behind occurred about 11,000 mild years away—a lot too far to pose a major menace—and its wavefront doubtless reached Earth about 300 years in the past. (credit score: NASA/JPL-Caltech) A