Five years later, what lessons have been learned from the Christmas coal ash spill? David Biello investigates

Based on the number of searches for info about smoking cessation on Google, it appears more people consider quitting on Mondays than any other day. Dina Fine Maron reports

The Montreal Protocol aimed to fix the ozone hole but it also delayed global warming. David Biello reports

If the world's growing population embraces a throwaway culture, human civilization may drown in garbage. David Biello reports

While most fertilizer nitrogen ends up in plants, plenty sits in the soil for decades. David Biello reports

An analysis of TV drug ads finds that six of 10 for prescription drugs and eight of 10 for OTC drug ads are misleading. Katherine Harmon reports.

From climate records to penguin counts, the shutdown of the U.S. government will have lasting science effects. David Biello reports

Game theory suggests that punishment for pollution has to come at the local level. David Biello reports

Airplanes may only contribute roughly 2 percent of the greenhouse gases warming the atmosphere. But they are one of the fastest growing sources. David Biello reports

New technologies will be needed for photovoltaics to become cheap. David Biello reports