Study Shows Big Game Hunters, Not Climate Change, Killed Off Sloths

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Prehistoric big game hunters and not the last ice age are the likely culprits in the extinction of giant ground sloths and other North American great mammals such as mammoths, mastodons and saber-toothed tigers, says a University of Florida researcher.


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All News summaries for August 04, 2005

Asian soot, smog may boost global warming in US

11 hours ago | User rating: not rated yet
(AP) -- Smog, soot and other particles like the kind often seen hanging over Beijing add to global warming and may raise summer temperatures in the American heartland by three degrees in about 50 years, says a new federal ...

Researcher says: No-till practices show extended benefits on wheat and forage

Sep 04, 2008 | User rating: not rated yet
With more than 3 million acres of wheat in north Texas, 50 percent or more of which is grazed by 1 to 2 million head of cattle, it is important to look at tillage practices and their effect on forage production, said a Texas ...

Scientists Test 'Artificial Upwelling' to Learn More About Complex Ocean Ecosystem Behavior

Sep 04, 2008 | User rating: not rated yet
(PhysOrg.com) -- A team of scientists is studying the complex ocean upwelling process by mimicking nature – pumping cold, nutrient-rich water from deep within the Pacific Ocean and releasing it into surface waters near Hawaii ...

Shuttle Atlantis Rolls to Launch Pad for Hubble Mission

Sep 04, 2008 | User rating: not rated yet
At 9:19 a.m. EDT this morning, space shuttle Atlantis began its slow trek from Kennedy Space Center's massive Vehicle Assembly Building to Launch Pad 39A, a journey that should take approximately six hours. ...

Astronomers discover missing link for origin of comets

Sep 04, 2008 | User rating: not rated yet
(PhysOrg.com) -- An international team of scientists that includes University of British Columbia astronomer Brett Gladman has found an unusual object whose backward and tilted orbit around the Sun may clarify the origins ...
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