Please Don't Eat the Daisies: The macroevolution of alternate plant defense strategies
Coelacanth genome surfaces: Unexpected insights from a fish with a 300-million-year-old fossil record
An international team of researchers has decoded the genome of a creature whose evolutionary history is both enigmatic and illuminating: the African coelacanth. A sea-cave dwelling, five-foot long fish with ...
Apr 17, 2013
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Human Y chromosome much older than previously thought
(Phys.org) —University of Arizona geneticists have discovered the oldest known genetic branch of the human Y chromosome – the hereditary factor determining male sex.
Mar 04, 2013
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Sunlight stimulates release of climate-warming gas from melting Arctic permafrost, study says
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 ...
Feb 11, 2013
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Digging yields clues: Biologists connect burrowing behavior in mice to genes
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 ...
Jan 16, 2013
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In evolution, fossils reveal, 'Court Jester' gets last laugh
(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.
Jan 10, 2013
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Did Lucy walk, climb, or both? Australopithecine ancestors—arboreal versus terrestrial habitat and locomotion
Dartmouth researchers investigate tree-climbing behavior of modern hunter-gatherers to elucidate our fossil ancestors' terrestrial versus arboreal preferences.
Dec 31, 2012
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Genomes of limpet, leech and worm put spotlight on lophotrochozoans
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 ge ...
Dec 19, 2012
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Vast differences in Antarctic and Arctic polar ocean microbial communities reported
(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 ...
Oct 08, 2012
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In birds' development, researchers find diversity by the peck
(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 ...
Sep 24, 2012
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Uncoiling the cucumber's enigma: Researchers discover a biological mechanism for coiling
Study pushes back onset date of South Africa's Later Stone Age by more than 20,000 years
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 ...
Jul 30, 2012
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Woolly mammoth extinction has lessons for modern climate change
Although humans and woolly mammoths co-existed for millennia, the shaggy giants disappeared from the globe between 4,000 and 10,000 years ago, and scientists couldn't explain until recently exactly how the ...
Jun 12, 2012
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Change in developmental timing was crucial in the evolutionary shift from dinosaurs to birds: study
At first glance, it's hard to see how a common house sparrow and a Tyrannosaurus Rex might have anything in common. After all, one is a bird that weighs less than an ounce, and the other is a dinosaur that ...
May 27, 2012
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Hacking code of leaf vein architecture solves mysteries, allows predictions of past climate
(Phys.org) -- UCLA life scientists have discovered new laws that determine the construction of leaf vein systems as leaves grow and evolve. These easy-to-apply mathematical rules can now be used to better ...
May 23, 2012
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