Meteorite minerals hint at earth extinctions, climate change

A huge asteroid that wiped out the dinosaurs may not have been the only cosmic event to cause mass extinctions or change Earth's climate. Tiny minerals leftover from many smaller meteorites could provide the geological evidence ...

Bacteria munch up alumina impurities

Previously unknown species of naturally-occurring bacteria have the potential to save the alumina and aluminium industries millions of dollars while helping to reduce their impact on the environment, microbiologist Naomi ...

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