Cobalt sits in the center of the corrin ring of vitamin B12 and the important cobalamins we derive from it. Perhaps surprisingly, only two of our enzymes bother to use these painfully constructed and meticulously channeled ...
The evolution of planet Earth and the emergence of life during its first half-billion years are inextricably linked, with a series of planetwide transformations—formation of the ocean, evolution of the atmosphere, and the ...
Earth Sciences
Feb 15, 2019
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New clues emerging from fossils found in the oldest soils on Earth suggest that multicellular, land-dwelling organisms possibly emerged much earlier than thought.
Archaeology
Jan 8, 2019
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Life on Earth may have originated not in warm tropical seas, but with weird tubes of ice—sometimes called "sea stalactites"—that grow downward into cold seawater near the Earth's poles, scientists are reporting. Their ...
Biochemistry
Apr 24, 2013
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(Phys.org) —A structural biologist at the Florida State University College of Medicine has made discoveries that could lead scientists a step closer to understanding how life first emerged on Earth billions of years ago.
Cell & Microbiology
Apr 5, 2013
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(PhysOrg.com) -- Fundamental chemical processes in predecessors of our solar system are now a bit better understood: An international team led by Peter Hoppe, researcher at the Max Planck Institute for Chemistry in Mainz, ...
Astronomy
Jan 20, 2012
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(PhysOrg.com) -- Within the next few years, the number of planets discovered in orbits around distant stars will likely reach several thousand or more. But even as our list of these newly discovered "exoplanets" grows ever-longer, ...
Astronomy
Nov 21, 2011
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Comets have always fascinated us. A mysterious appearance could symbolize God's displeasure or mean a sure failure in battle, at least for one side. Now Tel Aviv University justifies our fascination -- comets might have provided ...
Space Exploration
Apr 28, 2009
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