Sea robots show Arctic climate change

Underwater robots have uncovered new evidence about life in the Arctic and, for the first time, revealed the moment the region's marine ecosystem springs into life after the dark winter season.

Image: Spring color in the North Sea

The increasing sunlight and warmth of springtime provoke buds and blooms amidst the trees, flowers, and grasses on land. Warm air and sunlight also beget warmer ocean waters and provoke blooms of the "grass of the sea"—phytoplankton. ...

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