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As Bernie Sanders' campaign pushes Hillary Clinton toward more progressive positions, the rest of the Democratic Party may follow.
Time is running out for the world's coral reefs.
Diane Burko traveled from pole to pole to research the geology of ice and glaciers.
The Delta 5 trial begins Monday in Washington.
Can "fish hackathons" really save the oceans?
Welcome to the internet, where you can say anything.
The Democratic long-shot talked up the climate issue, but he didn't find a way to get voters to feel it.
In which we explain #orangegate.
By making the water over part of a reef less acidic, researchers were able to measure how much faster coral can grow without CO2 pollution.