Meteorologist On Climate Change: Viewers Are Less Skeptical

The number of American adults who are “very certain that global warming is not occurring” has dropped from 16 percent in 2010 to 8 percent in 2012, according to a survey released by Yale University. But a recent poll still shows a nation split over questions of whether climate change is real, whether humans play a major role in it, and what can be done about it.

Tracking Sediments’ Fate In Largest-Ever Dam Removal

Scientists tracking the aftermath of the largest dam removal in U.S. history say the dismantling of a dam in northwestern Washington state has unleashed about 34 million cubic yards of sediment and debris that built up for more than a century.