This video illustrates that as mountaintop removal mining has become increasingly controversial across Appalachia, the debate over the fate of Coal River Mountain has become something of a symbolic line in the sand.
In this video, Donald G. McNeil Jr. demonstrates how a new personal water filter, worn around the neck, could help ensure people around the world have clean water to drink.
In this video, Ted Van Hyning, director of Event Technology at the Renaissance Hotel in Cleveland, Ohio, represents one of many businesses that are beginning to switch to LED lighting in their establishments.
In this video, Ban Ki-moon, the United Nations secretary general, spoke with The Times's Andrew C. Revkin after climate change talks in Copenhagen concluded Saturday.