All Stories by Sid Perkins
- Earth
Mapping with GRACE
Global gravity maps compiled from data painstakingly gathered during the last 30 years have now been rendered obsolete by a pair of satellites that were launched just last March.
- Earth
Toppling icebergs sped breakup of Larsen B ice shelf
Scientists now think they know what accelerated the rapid disintegration of most of Antarctica's Larsen B ice shelf early this year after a strong summer storm pummeled the region.
- Earth
Toppling icebergs sped breakup of Larsen B ice shelf
Scientists now think they know what accelerated the rapid disintegration of most of Antarctica's Larsen B ice shelf early this year after a strong summer storm pummeled the region.
- Earth
Contrails forecast on the horizon
Studies of the contrails generated by jets flying high over Alaska may lead to improved techniques for predicting the formation of the artificial clouds, which some scientists suggest have a warming effect on Earth's climate.
- Earth
Contrails forecast on the horizon
Studies of the contrails generated by jets flying high over Alaska may lead to improved techniques for predicting the formation of the artificial clouds, which some scientists suggest have a warming effect on Earth's climate.
- Earth
Warm arctic summer melted much ice
Satellite observations of the Arctic Ocean show that the amount of sea ice there this year was the lowest it's been in more than 20 years.
- Earth
Warm arctic summer melted much ice
Satellite observations of the Arctic Ocean show that the amount of sea ice there this year was the lowest it's been in more than 20 years.
- Planetary Science
Fresh crater found on lunar images
Scientists analyzing images of the moon's surface taken from lunar orbit believe they've identified the crater that formed when a small asteroid slammed into the moon almost 5 decades ago.
- Planetary Science
Fresh crater found on lunar images
Scientists analyzing images of the moon's surface taken from lunar orbit believe they've identified the crater that formed when a small asteroid slammed into the moon almost 5 decades ago.
- Earth
Solving Hazy Mysteries
Aerosols such as smoke, soot, and sea spray make for hazy vistas and stunning sunrises, but they also play major roles in Earth's climate and atmospheric chemistry.
- Earth
El Niños came more often in Middle Ages
Analyses of layered sediments from a South American lake suggest that the worldwide warm spells known as El Niños occurred more frequently about 1,200 years ago, when Europe was entering the Middle Ages, than they do today.
- Paleontology
Forged fossil is a fish-eating fowl
Detailed analyses of Archaeoraptor, a forged fossil once thought to be a missing link between dinosaurs and birds, reveal that the majority of that fake comes from an ancient, fish-eating bird.
