Search Results for: antarctica
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1,411 results
1,411 results for: antarctica
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Letters
Plan for a long stay Lawrence Krauss’ idea of staying permanently on Mars (SN: 10/10/09, p.4) is fascinating, but criticism by John F. Fay and Jeffry Mueller (Feedback, SN: 11/21/09 p.29) missed important information. Krauss too missed the best of all scientific comparisons. Regarding the travel to the American continent by the Pilgrims: the “capital […]
- Paleontology
Major eruption cooled the climate but went unnoticed
Ice-core records suggest that a major 1809 eruption cooled Earth even before the Tambora eruption and ‘the year without a summer’.
- Earth
Buried-lakes story wins top award
Some readers may be unaware of our sister publication, Science News for Kids, a weekly online magazine for middle-school readers. This morning, we learned that one of the site’s feature stories — Where Rivers Run Uphill — won this year’s top science journalism award for reporting news for children.
- Chemistry
PCBs: When green paint isn’t ‘green’
It seems we're literally painting the air -- from the Great Lakes to Antarctica -- with persistent pollutants. Including at least one whose safety has never been studied.
- Life
Penguin DNA evolving faster than thought
Comparing the DNA in modern birds to that in ancient generations shows molecular evolution happens at varying rates, and that each species has its own rate of evolution.
- Earth
Ozone hole trims polar water’s CO2-absorbing power
Simulations also suggest that the dearth of ozone over Antarctica leads to ocean acidification. Simulations also suggest that the dearth of ozone over Antarctica leads to ocean acidification
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- Space
Famous Martian meteorite younger than thought
The famous fragment of Mars, once proposed to hold signs of extraterrestrial life, is still pretty old. But the rock appears to have formed about 400 million years later than earlier analyses indicated.
- Earth
Lopsided lights
Simultaneous snapshots reveal that northern and southern auroras aren’t always alike.
- Earth
When trees grew in Antarctica
Fossils of trees that grew in Antarctica millions of years ago suggest a growth pattern much different than modern trees.
- Climate
Acidifying ocean may stifle phytoplankton
Chemical changes in seawater make a key nutrient less available to these organisms.
- Life
One ocean, four (or more) killer whale species
Killer whales may be at least four species, a new study of mitochondrial DNA shows.
