(Phys.org)—There is evidence that some microbial life had migrated from the Earth's oceans to land by 2.75 billion years ago, though many scientists believe such land-based life was limited because the ozone layer that ...
Earth Sciences
Sep 24, 2012
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Six of Harvard's deepest thinkers on the environment warned about a worsening climate crisis, even as they shared promising new technology, new ideas about city design, and examples of how markets can be used to meet the ...
Environment
Sep 20, 2012
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(Phys.org)—Ancient Mars, like Earth today, was a diverse planet shaped by many different geologic processes. So when scientists, using rovers or orbiting spacecraft, detect a particular mineral there, they must often consider ...
Space Exploration
Sep 12, 2012
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(Phys.org)—NASA's Mars rover Curiosity stepped through activities on Sept. 7, 8 and 9 designed to check and characterize precision movements by the rover's robotic arm and use of tools on the arm.
Space Exploration
Sep 11, 2012
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Instead of a warm, wet and possibly life-bearing planet as some scientists contend, early Mars may have been a hostile and volatile place with frequent volcanic outbursts, a study said Sunday.
Space Exploration
Sep 9, 2012
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(Phys.org)—Woods Hole Oceanographic Institution geologist Liviu Giosan and an international team of collaborators including environmental engineers, modelers, paleogeographers, and paleobiologists have pieced together a ...
Earth Sciences
Sep 4, 2012
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(Phys.org)—Delaware Geological Survey (DGS) scientists have uncovered hard proof of faults in northern Delaware, indicating the occurrence of earthquakes millions of years ago.
Earth Sciences
Aug 31, 2012
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The rise of the first complex life depended on vital metals brought up to the Earth's surface from far below in vast granite deposits, a new study argues.
Earth Sciences
Aug 7, 2012
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John Grotzinger is leading a march up a mountain near Death Valley, the rocks around him streaked red, brown and purple-gray.
Space Exploration
Aug 4, 2012
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Debate over the origin of large-scale polygons (hundreds of meters to kilometers in diameter) on Mars remains active even after several decades of detailed observations. Similarity in geometric patterns on Mars and Earth ...
Space Exploration
Jul 27, 2012
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