Search Results for: antarctica
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1,385 results
- Earth
Pieces of a Pulverizer? Sediment fragments may be from killer space rock
Scientists sifting sediments laid down just after Earth's most devastating mass extinction 250 million years ago may have found minuscule fragments of the extraterrestrial object that caused the catastrophe.
- Paleontology
Crawling through Time: Fish bones reveal past climate change
The timing of ancient migrations of snakehead fish from the Indian subcontinent into Europe, Asia, and Africa tells scientists about temperature and humidity changes in those locations.
- Paleontology
Winging South: Finally, a fly fossil from Antarctica
A tiny fossil collected about 500 kilometers from the South Pole indicates that Antarctica was once home to a type of fly that scientists long thought had never inhabited the now-icy, almost insectfree continent.
- Plants
Wind Highways: Mosses, lichens travel along aerial paths
Invisible freeways of wind may account for the similarity of plant species on islands that lie thousands of kilometers apart.
- Paleontology
Fossils of Flyers: Bones tell why Atlantic albatross disappeared
Ancient albatross fossils suggest that rising sea levels 400,000 years ago wiped out the North Atlantic population of short-tailed albatross.
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19345
The article states that a loss of 100,000 cubic kilometers of ice would result in a half-meter rise in sea level. That means that if the 32 million km3 polar ice pack melts, sea levels will rise 160 meters. But I have always heard a figure of around 50 feet. Being on a small island […]
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19334
In your article about the use of kites for science, we are told that Antarctica is “[m]ore than half a world away from Kansas.” I know a shorter route. It’s a round, round world, after all! Marvin E. Kahn Darnestown, Md.
- Earth
Earth sometimes shivers beneath thick blankets of ice
New analyses of old seismic data have distinguished the ground motions spawned by a previously unrecognized type of earthquake—quakes created by brief surges of massive glaciers.
- Earth
Can Banking Carbon Cool the Greenhouse?
Stockpiling carbon dioxide in plants and soil may be effective only for the short term, if at all.
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Explore Antarctica with Nomad
Follow the daily activities of Nomad, a roving robot searching for meteorites in Antarctica, at the Big Signal interactive Web site, developed by Peter Coppin of the STUDIO for Creative Inquiry in Carnegie Mellon’s College of Fine Arts. Check out daily progress reports, obtain background information, learn about telerobotics, and get a hint of what […]
- Earth
Not So Green? Using hydrogen as fuel may hurt environment
Replacing fossil fuels with clean-burning hydrogen—considered to be a way to reduce globe-warming carbon dioxide—may create a different set of environmental problems, including larger and longer-lasting ozone holes.
- Earth
Autosub Under Ice
Follow the Southampton (UK) Oceanography Centre’s “Autosub Under Ice” expedition to Antarctica’s Pine Island Bay. The centre’s Web site features daily news reports, images, and interviews with expedition members aboard the unmanned sub’s parent ship. The expedition runs until April 2. Go to: http://www.soc.soton.ac.uk/SOES/MSC/OC/CEO/aui/live.html
