Tsunami warning map from the BBC

Following the March 11, 2011 8.9-magnitude earthquake near Japan, a model of wave heights above normal sea level across the region and how long after the 0546 GMT earthquake they are expected.

Massive earthquake strikes Japan, tsunami warning.

The western U.S. and Canada - plus Hawaii and other islands in the Pacific - are under a tsunami warming today after a massive earthquake in Japan.

U.S. naval forces should prepare for climate change

A new report by the National Research Council suggests that U.S. naval forces should to examine and strengthen capabilities in the Arctic for climate change.

Mating mites trapped in amber show the female in control

Some 40 million years ago, the Glaesacarus rhombeus female mite made the mating choice. A pair of mites trapped in amber tells the tale.

Polar ice melting now largest contributor to sea level rise

Polar ice sheets are contributing to global sea level rise more than mountain glaciers and ice caps, from a new study. It's happening sooner than predicted.

How fish help create seafloor sediments

Fish ingest sea water and later excrete it as fine-grained carbonates, now known to make up a substantial portion of sea floor sediments.

Recent growth in Antarctic marine life discovered

Robert Falcon Scott and his team did not reach the South Pole first. But their expeditions have let scientists analyze a century's worth of Antarctic marine seabed data.

How does Earth keep its atmosphere?

Earth's atmosphere is an extremely thin skin surrounding our planet. What force keeps it from flying off into space?

How Antarctica ice forms turned upside down

New research by scientists at Columbia University’s Earth Institute indicates that some Antarctic ice Is forming from the bottom up.

Earthquake in a wheelbarrow

Watch this video created by a survivor of the February 2011 earthquake in Christchurch, New Zealand.