News tagged with life on earth

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New technique fills gaps in fossil record

University of Pennsylvania evolutionary biologists have resolved a long-standing paleontological problem by reconciling the fossil record of species diversity with modern DNA samples.

Sep 19, 2011
4.8 / 5 (5) 4

Hitchhiking snails fly from ocean to ocean

Smithsonian scientists and colleagues report that snails successfully crossed Central America, long considered an impenetrable barrier to marine organisms, twice in the past million years -- both times probably ...

Sep 14, 2011
4.3 / 5 (3) 3

Rock rafts could be 'cradle of life'

(PhysOrg.com) -- Floating rafts of volcanic pumice could have played a significant role in the origins of life on Earth, scientists from Oxford University and the University of Western Australia have suggested.

Sep 02, 2011
4.8 / 5 (6) 12

Amino acid alphabet soup

All life on Earth relies on a standard set of 20 amino acids to build the proteins that carry out life's essential actions. But did it have to be this way?

Aug 19, 2011
4.4 / 5 (5) 9

Science materials in Texas get prelim. approval

(AP) -- An expected fight over teaching evolution in Texas classrooms fizzled Thursday when the state's Board of Education gave preliminary approval to supplemental science materials for the coming school ...

Jul 22, 2011
4.5 / 5 (2) 1

Sulfurous signs of life

Any sulfurous molecules that astronomers spot on alien worlds might be a way to reveal whether or not those distant planets host life, researchers suggest.

Jun 30, 2011
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