Turns out living animals aren't the only ones with internal
clocks. Plants also have them and they're driven by sugar! Anthony
explains how they work.
Maine has supervolcanoes. Wait, Maine has volcanoes? Yes, and
their eruptions could have been among the biggest ever on Earth.
Russia again objects to a plan to protect Antarctic waters.
Carbon dioxide emissions hit a record high in 2012, but could
have been even higher, according to a new report. The increase in
emissions was only 1.1 percent in 2012, compared to an average 2.9
percent over the past decade.
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