Earth

Scientists using NASA satellite data have found strong evidence that a major earthquake can lead to a nearly immediate increase in regional volcanic activity.

The intensity of two ongoing volcanic eruptions on Indonesia’s Java Island increased sharply three days following a powerful, 6.4-magnitude earthquake on the island in May 2006. The increased volcanic activity persisted for about nine days.

Planting and protecting trees—which trap and absorb carbon dioxide as they grow—can help to remove carbon dioxide from the atmosphere. But a new study suggests that, as a way to fight global warming, the effectiveness of this strategy depends heavily on where these trees are planted. In particular, tropical forests are very efficient at keeping the Earth at a happy, healthy temperature.

Oceanographers have completed an important step in constructing the first deep-sea observatory off the continental United States. Workers in the multi-institution effort laid 32 miles (52 kilometers) of cable along the Monterey Bay sea floor that will provide electrical power to scientific instruments, video cameras, and robots 3,000 feet (900 meters) below the ocean surface.

High-resolution images that reveal unexpected details of the Earth's internal structure are among the results reported by MIT and Purdue scientists in the March 30 issue of Science.

The maximum extent of Arctic sea ice in winter 2007 was the second lowest on satellite record, narrowly missing the 2006 record, according to a team of University of Colorado at Boulder researchers.

As the ancient Greeks were placing the last few stones on the magnificent theater at Epidaurus in the fourth century B.C., they couldn’t have known that they had unwittingly created a sophisticated acoustic filter.

Not from marijuana but from ... ethanol.

Many will be familiar with cravings for sweet food after having overindulged in alcohol the night before. Some may have cravings for salty foods after using marijuana - in Amsterdam, where it is legal, of course.

Sandia National Laboratories researchers Mark Ivey and Bernie Zak are members of a research team from around the world whose work on the cold tundra in northern Alaska is helping to transform scientists' understanding of what the future may hold for Earth's climate.

The team conducts research at the North Slope of Alaska east of Barrow along the coast of the Chukchi Sea.Instrument clusters near Barrow, Alaska, gather data useful in refining global climate models. (Photo by Mark Ivey)

Crumpled kitchen foil that lays flat for reuse. Bent bumpers that straighten overnight. Dents in car doors that disappear when heated with a hairdryer. These and other physical feats may become possible with a technique to make memory metals discovered by researchers at the University of Illinois.

Fewer big sharks in the oceans led to the destruction of North Carolina’s bay scallop fishery and inhibits the recovery of depressed scallop, oyster and clam populations along the U.S. Atlantic Coast, according to an article in the March 30 issue of the journal Science.