A new study involving NCAR's Bette Otto-Bliesner looks at rising sea levels during the warmth of the last interglacial period (130,000 to 120,000 years ago) and finds that melting ice sheets contributed far more to rising sea levels than thermal expansion.

Alfvén waves contain enough energy to heat the corona and drive the solar wind.

If you’re an American, it’s tough to avoid corn. This ubiquitous starch turns up in soft drinks, compostable cups, and automobile fuel—and even plays a role in U.S. heat waves, including the intense one of 2011.