News tagged with life on earth

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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 | with audio podcast

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 | with audio podcast

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 | with audio podcast

Meteorites: Tool kits for creating life on Earth

Meteorites hold a record of the chemicals that existed in the early Solar System and that may have been a crucial source of the organic compounds that gave rise to life on Earth. Since the 1960s, scientists have been trying ...

Aug 08, 2011
4.3 / 5 (6) 3 | with audio podcast

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
3.7 / 5 (9) 17 | with audio podcast