Earth & Environment

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DIATOMIC ART  This colorful pattern, which is hundreds of microns across, is made up of hard-shelled algae called diatoms. 

Woolly mammoths

MAMMOTH MELTDOWN  Woolly mammoths and other titans of the last Ice Age dwindled after periods of abrupt warming, rather than extreme cold, new climate and paleontological records reveal.

U.S. oil and gas wells

GOING DEEP?  A surprising number of U.S. oil and gas wells, similar to this one, are hydraulically fractured at shallow depths, a new study finds. 

Earth & Environment

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