When you've been studying the ways of the atmosphere since the 1930s, you have many tales to tell. Joachim Kuettner has been sharing his life stories, including some lesser-known ones, in a new round of oral and video histories.

The stretch of the subcontinent that runs from eastern Pakistan across northern India into Bangladesh is likely the world's most intensively irrigated region. A new NCAR study shows that between 2002 and 2008, the region depleted groundwater at a rate of around 13 cubic miles per year.

Arctic temperatures in the 1990s reached their warmest level of any decade in at least 2,000 years, new research indicates.