Researchers embark this week on a month-long airborne campaign to measure ice sheet and glacier thickness.

Although the International Polar Year officially came to a close in February, NASA is continuing to push the frontiers of polar science from space, the air and the surface of ice.

When NASA launches the Glory satellite, researchers will have the most accurate instrument to date for measuring solar fluctuations.

NASA has created a unique "spherical" movie about Earth's changing ice and snow cover as captured by NASA spacecraft.

NASA scientists will reveal new information and images about our sun and its influence on Earth and the solar system for Sun-Earth Day.

The Montreal Protocol has helped reduce contaminants responsible for damage to the ozone layer ... but what if the landmark treaty had never existed?

Biological molecules created in space and brought to Earth by meteorite impacts may help explain why life is left-handed.

New interactive features on NASA's Global Climate Change Web site give the public the opportunity to "fly along" with NASA's fleet of Earth science missions.

A new detection technique and a new satellite instrument should help ease the struggle of detecting tiny particles in the air that may affect global climate.

Researchers have used NASA satellite data to pinpoint the cause of a 2008 tornado that struck Atlanta. It was the first twister in the city's recorded history.

A new concept in energy production could harness the power of ocean waves.

CALIPSO traced vertically through the layers of the atmosphere to study the smoke from Australian bushfires in February.

Scientists have observed, for the first time, the healing of subtle surface scars from an earthquake that occurred on a "buried" fault several miles below the surface.

After 25 years of observing the Earth, Landsat 5 is still going strong -- 22 years beyond its primary mission lifetime.