News tagged with human clock
Biologists discover an 'evening' protein complex that regulates plant growth
Farmers and other astute observers of nature have long known that crops like corn and sorghum grow taller at night. But the biochemical mechanisms that control this nightly stem elongation, common to most plants, have been ...
Jul 13, 2011 |
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Amazon.com founder to make 10,000 year clock
(PhysOrg.com) -- Jeff Bezos the founder of Amazon.com has embarked on an interesting and unique project that, if all goes well, will last the test of time, a whole lot of time. He is looking to create a clock ...
Technology / Hi Tech & Innovation
Jun 23, 2011 |
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Are humans extinction-proof?
Does climate change seriously threaten to wipe out the human species if left unchecked? Examining our evolutionary past suggests it might once have been the perfect catalyst for our extinction. But now?
Jun 09, 2011 |
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Scientists pinpoint link between light signal and circadian rhythms
In a new paper published this week in the Proceedings of the National Academy of Sciences, Aziz Sancar, MD, PhD, the Sarah Graham Kenan Professor of Biochemistry and Biophysics in the UNC School of Medicine, and his collea ...
Dec 29, 2010 |
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Why the biological clock? Study says aging reduces centromere cohesion, disrupts reproduction
University of Pennsylvania biologists studying human reproduction have identified what is likely the major contributing factor to the maternal age-associated increase in aneuploidy, the term for an abnormal ...
Sep 08, 2010 |
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Melatonin, a hormone segregated by human body, regulates sleep better than somniferous
Melatonin, a natural hormone segregated by the own human body, is an excellent sleep regulator expected to replace somniferous, which are much more aggressive, to correct the sleep/wakefulness pace when human biological clock ...
Nov 05, 2009 |
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Scientists model 3D structures of proteins that control human clock
In an Early Edition issue of The Proceedings of the National Academy of Sciences (PNAS) on April 9, 2009, the researchers report that they have been able to determine the molecular structure of a plant photolyase protein that ...
Apr 11, 2009 |
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