Chile rocked by earthquakes again Thursday morning

Following the 7.2-magnitude quake, at least three more quakes, or "aftershocks," also shook the region. Read more about the Chile earthquakes.

Impact on marine life from ocean acidification

Carol Turley's research confirms that oceans are acidifying from atmospheric CO2, and that changes in ocean chemistry will likely impact marine life.

Past ice ages and our climate’s future

Princeton earth scientist Daniel Sigman talks about how we can learn about the future of Earth's climate by studying past ice ages. Read more here.

Robert Hirsch says U.S. doing more with less water

A USGeological Survey report found that Americans have done more with less water since 1975. Water use, per person, is down about 30 percent. Read more with Robert Hirsch.

Niall Edworthy and his book Bald Coot, Screaming Loon

Who doesn't want to know, for example, why birds flying in big flocks never collide? Or if geese mind being force-fed to make foie gras? Read more from Niall Edworthy.

Rapid climate change 13,000 years ago

Gill has been studying a period of rapid cooling 13,000 years ago. She says understanding the rapid climate change can be key to understanding the future.

Earthquake early warning system for California?

Dr. Allen talked to EarthSky about how an earthquake early warning system could work in California. Read more about the possibility for this system here.

Groundwater depletion across globe is alarming

Famiglietti's discovered California's Central Valley - responsible for 25% of the food consumed in the U.S. - has lost alarming rates of groundwater depletion.

Drew Shindell on regulating greenhouse gases

Drew Shindell explains why regulating greenhouse gas-emitting activity would both improve air quality and slow climate change.

Jay Zwally: Greenland ice loss is canary in coal mine

"Even if there is no additional climate warming," said Jay Zwally, "sea level will continue to rise, about 16 inches over the next hundred years."