"I think there's a lot of interest." Scientists make critical breakthrough in effort to build limitless energy machines: ...

The Trump administration has exempted 47 companies from regulations to curb mercury and air toxics for their coal-fired power ...

This time, the pollutant is mercury, and the sentinels are penguins living in the farthest reaches of the Antarctic Peninsula. In 1962, when environmentalist and author Rachel Carson pennedSilent ...