Tropical sea snake uses its head to 'breathe'

Humans use a snorkel and fish have gills. Now researchers have found a sea snake which uses a complex system of blood vessels in its head to draw in extra oxygen when it dives and swims underwater.

Snowfall frequency declining across Northwest, study finds

With warming temperatures, average snowfall frequency is estimated to decline across the Pacific Northwest by 2100—and at a faster rate if greenhouse emissions are not reduced, according to a new Portland State University ...

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