Articles with the keyword: 
Did lack of comet impacts help life evolve?
sea-maid submitted, created time 1 day 16 hours (www.newscientist.com)
IT SEEMS we got off lightly in the cosmic lottery. Deadly comet impacts may be much rarer in our solar system than in others nearby. 
piggy submitted, created time 2 weeks 3 days (sciencenow.sciencemag.org)
A common European weed has turned its compact flower into an expansive, yellow-petalled blossom by borrowing a couple of genes from a close Italian relative. Researchers say the exchange is a rare documented example of beneficial genetic flow between species. It also challenges the notion that higher organisms must rely on their own genes to evolve.
The story starts three hundred years ago, when botanists introduced a yellow Sicilian flower called Senecio squalidus to Oxford, U.K. At the time, there was only one variety of a British weed known as the common groundsel (S
Vampire Moth Discovered -- Evolution at Work
piggy submitted, created time 1 month 1 day (news.nationalgeographic.com)
A previously unknown population of vampire moths has been found in Siberia. And in a twist worthy of a Halloween horror movie, entomologists say the bloodsuckers may have evolved from a purely fruit-eating species.
Only slight variations in wing patterns distinguish the Russian population from a widely distributed moth species, Calyptra thalictri, found in central and southern Europe, known to feed only on fruit.
When the Russian moths were experimentally offered human hands this summer, the insects drilled their hook-and-barb-lined tongues under the skin and sucked blood.
Nature inverviews Senator Obama on science issues
Darkfrog submitted, created time 2 months 6 days (www.nature.com)
The title says it all. Obama, in his own words, responds to Nature magazine on scientific issues. The original idea for the article had been to get both candidates' views, but McCain's campaign declined Nature's invitation. Summaries of Senator McCain's views are given instead.
The only scientific issue for which McCain shows more enthusiasm than Obama is the space program. On others, he is either surpassed or matched by Obama
Education: Royal Society's Director of Education steps down over creationist remarks
Darkfrog submitted, created time 2 months 1 week (www.nature.com)
The Royal Society's Director of Education seems to have been forced to step down. Michael Reiss, who is both a professor at England's Institute of Education and an Anglican priest, stepped down the other day after a speech in which he advocated "engage in dialogue with the creationist views some children express in science classes" [Nature's words] re-raised old questions about whether priests should be appointed to such positions at all.
Frankly, I think it is perfectly possible for a priest to serve in such a capacity
Scientists develop new method to investigate origin of life
sea-maid submitted, created time 2 months 4 weeks (esciencenews.com)
Scientists at Penn State have developed a new computational method that they say will help them to understand how life began on Earth. The team's method has the potential to trace the evolutionary histories of proteins all the way back to either cells or viruses, thus settling the debate once and for all over which of these life forms came first. "We have just begun to tap the potential power of this method," said Randen Patterson, a Penn State assistant professor of biology and one of the project's leaders
Study says eyes evolved for X-Ray vision
sea-maid submitted, created time 3 months 15 hours (esciencenews.com)
The advantage of using two eyes to see the world around us has long been associated solely with our capacity to see in 3-D. Now, a new study from a scientist at Rensselaer Polytechnic Institute has uncovered a truly eye-opening advantage to binocular vision: our ability to see through things. Most animals — fish, insects, reptiles, birds, rabbits, and horses, for example — exist in non-cluttered environments like fields or plains, and they have eyes located on either side of their head
Ancient Beavers Take Silver in Log-Chomping Olympics
sea-maid submitted, created time 3 months 2 weeks (sciencenow.sciencemag.org)
Call it The Great Gnaw-Off. By studying logs chomped nearly five million years ago, researchers have discovered that ancient beavers weren't nearly as expert lumberjacks as their modern cousins. Indeed, the evidence suggests that they would have been trounced by today's beavers in a tree-cutting Olympics. Researchers say the finding provides rare insight into how one of the animal kingdom's busiest critters may have shaped ancient landscapes
Darkfrog submitted, created time 4 months 3 weeks (www.nature.com)
Although young flatfish have one eye on each side of their heads, the adult flatfish sports both on one side. This allows the fish to lie on the sea floor looking up and still retain its depth perception. This ocular migration has puzzled gradual evolutionists. If the trait evolved gradually over many generations, then why aren't there fossils showing fish with partially migrated eyes?
Well today's Nature posts the discovery of two such fish fossils, blowing a giant raspberry at both creationists and sudden-jump evolutionists alike.
Evolution and historical continguency caught on tape! E. coli amass traits over time.
Darkfrog submitted, created time 5 months 2 weeks (www.pnas.org)
Historical contingency is a new phrase for me. I gather that it means "the idea that a given new mutation cannot create a new trait unless certain other, related mutations have already taken place." Anyway, it's been observed, repeatedly, in a laboratory setting.
Researchers split some identical E. coli into twelve colonies and gave them a glucose-poor medium that contained citrate, which E. coli cannot ordinarily process. Eventaully, around generation 32,000 some of the E. coli gained the ability to use citrate as food
Bacteria make major evolutionary shift in the lab
sea-maid submitted, created time 5 months 2 weeks (www.newscientist.com)
A major evolutionary innovation has unfurled right in front of researchers' eyes. It's the first time evolution has been caught in the act of making such a rare and complex new trait.
Ordinarily E. coli cannot process citrate. In fact, this trait is one of the things that researchers use to distinguish E. coli from other species. This team separated E. coli into twelve separate cultures and allowed it to divide. No matter how they replayed things, only extracts from the one citrate-plus culture ever re-developed citrate processing abilities
Evolution opponents use "strengths and weaknesses" rhetoric to undermine science in schools
Darkfrog submitted, created time 5 months 3 weeks (www.nytimes.com)
"Creation science" didn't work. "Intelligent design" didn't work. Thank God. The new move for opponents of the theory of evolution, according to this article in the New York Times, is "strengths and weaknesses." Strictly speaking, I have nothing against pointing out the scientific weaknesses of evolution, but most textbooks could probably handle that in half a page. The advocates of the "strengths and weaknesses" ideology want the textbook to say, "evolution has an inability to explain the Cambrian explosion," when it really ought to say, "we don't know what caused the Cambrian explosion
Darwin Papers Debut on Internet
Sue Wu submitted, created time 7 months 1 week (blog.wired.com)
The complete works of Charles Darwin -- a god among scientists and the bane of every creationist’s existence – are finally available for anyone, anywhere to read. And it only took 126 years and another scientific revolution to make it happen.
Insects Evolved Radically Different Strategy to Smell
Sue Wu submitted, created time 7 months 2 weeks (www.sciencedaily.com)
Darwin's tree of life represents the path and estimates the time evolution took to get to the current diversity of life. Now, new findings suggest that this tree, an icon of evolution, may need to be redrawn.
Web Extra: First Frog without Lungs
jiangyun submitted, created time 7 months 2 weeks (www.sciencenews.org)
Maybe it's incredible. Looks like a frog. Swims like a frog. But doesn't croak. A flattened, brown, aquatic species from Borneo has just become the only frog shown to have no lungs.
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