(Phys.org) —University of Arizona geneticists have discovered the oldest known genetic branch of the human Y chromosome – the hereditary factor determining male sex.
Biotechnology
Mar 4, 2013
7
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Ancient carbon trapped in Arctic permafrost is extremely sensitive to sunlight and, if exposed to the surface when long-frozen soils melt and collapse, can release climate-warming carbon dioxide gas into the atmosphere much ...
Environment
Feb 11, 2013
240
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Nature vs. nurture has long been one of the great debates in science—is behavior hard-wired into the brain, or determined by environment? In at least some cases, Harvard researchers are showing, how animals behave is in ...
Plants & Animals
Jan 16, 2013
1
0
(Phys.org)—The dominant factors in the rise and fall of the diversity of life on Earth has been a point of debate for scientists nearly as long as they have studied the processes of evolution.
Earth Sciences
Jan 10, 2013
1
0
Dartmouth researchers investigate tree-climbing behavior of modern hunter-gatherers to elucidate our fossil ancestors' terrestrial versus arboreal preferences.
Archaeology
Dec 31, 2012
4
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A new report in the journal Nature unveils three of the first genomes from a vast, understudied swath of the animal kingdom that includes as many as one-quarter of Earth's marine species. By publishing the genomes of a leech, ...
Biotechnology
Dec 19, 2012
0
1
(Phys.org)—An international team of scientists, including a University of Michigan graduate student, has demonstrated that a clear difference exists between the marine microbial communities in the Southern and Arctic oceans, ...
Earth Sciences
Oct 8, 2012
0
0
(Phys.org)—It has long been known that diversity of form and function in birds' specialized beaks is abundant. Charles Darwin famously studied the finches on the Galapagos Islands, tying the morphology (shape) of various ...
Plants & Animals
Sep 24, 2012
0
0
Captivated by a strange coiling behavior in the grasping tendrils of the cucumber plant, researchers at Harvard University have characterized a new type of spring that is soft when pulled gently and stiff when pulled strongly.
Other
Aug 30, 2012
5
0
The Later Stone Age emerged in South Africa more than 20,000 years earlier than previously believed -- about the same time humans were migrating from Africa to the European continent, says a new international study led by ...
Archaeology
Jul 30, 2012
0
1
