Search Results for: Mammoths
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784 results for: Mammoths
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AstronomyCelestial Divide: Finding two families of galaxies
By analyzing data from a mammoth sky survey, astromoners have found that galaxies divide into two distinct families, depending on their stellar mass.
By Ron Cowen -
PaleontologyFertile Ground: Snippets of DNA persist in soil for millennia
Minuscule samples of sediment from New Zealand and Siberia have yielded bits of DNA from dozens of animals and plants, including the oldest DNA sequences yet found that can be traced to a specific organism.
By Sid Perkins -
AstronomyMining the Sky
A proposed national virtual observatory, a mammoth computer database integrating spectra, images, and other information covering the entire sky, could usher in a new age of discovery in astronomy.
By Ron Cowen -
AstronomyAn Illuminating Journey
Astronomers are beginning to use the cosmic microwave background, the remnant glow from the Big Bang, in a dramatically different way: Instead of treating it as a snapshot of the early universe, researchers are proposing to employ the radiation as a flashlight that probes the evolution of structure in the universe over its entire 13-billion-year history.
By Ron Cowen -
EarthIll Winds
Research suggests that the long-range movement of dust can sicken wildlife, crops—even humans—a continent away.
By Janet Raloff -
PaleontologyAlaska in the ice age: Was it bluegrass country?
At the height of the last ice age, northern portions of Alaska and the Yukon Territory were covered with an arid yet productive grassland that supported an abundance of large grazing mammals, fossils suggest.
By Sid Perkins -
AstronomyRevved-up antics of a pulsar jet
Flailing like an out-of-control fire hose, a mammoth jet of charged particles gushing from a collapsed star is varying its shape and brightness more rapidly than any other jet known in the heavens.
By Ron Cowen -
PaleontologyA human migration fueled by dung?
When people made their way from Asia to the Americas, the path they took may have been covered in dung.
By Sid Perkins -
PaleontologyNorthern Extinction: Alaskan horses shrank, then disappeared
Horses that lived in Alaska shrank dramatically in body size before they went extinct at the end of the last ice age.
By Sid Perkins -
ArchaeologyBones of Invention: German cave yields Stone Age figurines
Three ivory figurines found in southwestern Germany may belong to one of the world's oldest known art traditions, dating to more than 30,000 years ago.
By Bruce Bower -
ArchaeologyBones of Invention: German cave yields Stone Age figurines
Three ivory figurines found in southwestern Germany may belong to one of the world's oldest known art traditions, dating to more than 30,000 years ago.
By Bruce Bower