Ocean currents, not warm air, are driving Antarctic ice loss

West Antarctica loses ice to the sea even if a summer isn't warm enough to melt snow on top of the glaciers. The oceans do the work from below, a study shows.

NOAA Weather Radio more reliable than a tornado siren

Tornado sirens are meant to save lives, but the six people killed by a tornado in Oklahoma never heard a siren. People should rely on a NOAA Weather Radio.

Best image yet of ongoing activity at Popocatépetl volcano

Mexico’s Popocatepetl volcano has been active since mid-April 2012, and now NASA has produced the best image yet of this spectacular volcano.

Dynamic storm will affect U.S. East, eastern Ontario and Quebec

Snow, heavy rain and strong winds expected across parts of U.S. and Canadian east. With trees leafed out, this winter storm could cause power outages and more.

Mexico’s Popocatepetl volcano keeps millions of people on alert

The Popocatepetl volcano, located about 43 miles (70 km) southeast of Mexico City, has been spouting ash and vapor into the sky this week.

More jellyfish around the world, says study

Jellyfish are increasing in the majority of the world’s coastal ecosystems, according to a new study.

Early spring in eastern North America compared to rest of globe

New NASA map depicts an early spring in eastern two-thirds of North America in March 2012, when temperatures approached 18 degrees Fahrenheit above normal.

6.7-magnitude earthquake in central Chile

The earthquake took place 26 miles NNE of Valparaiso and 112 kilometers (69 miles) NW of Santiago. No tsunami warning issued. No immediate reports of injuries.

Emperor penguin colonies in Antarctica

Good news for penguin lovers! New satellite images show that there are twice as many emperor penguin colonies in Antarctica than previously thought.

Dead Sea from 1972 to 2011: View from space

Three Landsat images show the expansion of massive salt evaporation projects in and around the Dead Sea, over the span of 39 years.

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