ScienceDaily: Top Environment News |
- Sequencing hundreds of chloroplast genomes now possible
- This is what a fish thought looks like
- Evidence of geological 'facelift' in the Appalachians
- Ozone depletion trumps greenhouse gas increase in jet-stream shift
- Ozone thinning has changed ocean circulation
- Owl mystery unravelled: Scientists explain how bird can rotate its head without cutting off blood supply to brain
- Genome shows mutant gene gives pigeons fancy hairdos
- Vegetation changes in cradle of humanity: Study raises questions about impact on human evolution
- Gene finding may lead to treatments effective against all MRSA strains
- Study rebuts hypothesis that comet attacks ended 9,000-year-old Clovis culture
- Disease not a factor in Tasmanian Tiger extinction; Humans to blame for demise of extinct Australian predator
- Aztec conquest altered genetics among early Mexico inhabitants, new DNA study shows
- Biologistics: How fast do chemical trains move in living cells?
- Cyclone did not cause 2012 record low for Arctic sea ice
- Protein origami: Quick folders are the best
- 24 new species of flower fly have been found in Central and Southern America
- Disappearing homing pigeon mystery solved
| Sequencing hundreds of chloroplast genomes now possible Posted: 31 Jan 2013 11:44 AM PST Researchers have developed a sequencing method that allows potentially hundreds of plant chloroplast genomes to be sequenced at once, facilitating studies of molecular biology and evolution in plants. This method relies on efficient separation of chloroplast DNA using short DNA "baits" designed from already-sequenced chloroplast genomes. These molecular baits concentrate the chloroplast DNA before sequencing, dramatically increasing the number of samples that can be sequenced. |
| This is what a fish thought looks like Posted: 31 Jan 2013 11:44 AM PST For the first time, researchers have been able to see a thought "swim" through the brain of a living fish. The new technology is a useful tool for studies of perception. It might even find use in psychiatric drug discovery, according to authors of a new study. |
| Evidence of geological 'facelift' in the Appalachians Posted: 31 Jan 2013 11:44 AM PST How does a mountain range maintain its youthful, rugged appearance after 200 million years without tectonic activity? Try a geological facelift -- courtesy of Earth's mantle. |
| Ozone depletion trumps greenhouse gas increase in jet-stream shift Posted: 31 Jan 2013 11:43 AM PST Depletion of Antarctic ozone is a more important factor than increasing greenhouse gases in shifting the Southern Hemisphere jet stream in a southward direction, according to researchers. |
| Ozone thinning has changed ocean circulation Posted: 31 Jan 2013 11:41 AM PST A hole in the Antarctic ozone layer has changed the way that waters in the southern oceans mix, a situation that has the potential to alter the amount of carbon dioxide in the atmosphere and eventually could have an impact on global climate change. |
| Posted: 31 Jan 2013 11:41 AM PST Medical illustrators and neurological imaging experts have figured out how night-hunting owls can almost fully rotate their heads -- by as much as 270 degrees in either direction -- without damaging the delicate blood vessels in their necks and heads, and without cutting off blood supply to their brains. |
| Genome shows mutant gene gives pigeons fancy hairdos Posted: 31 Jan 2013 11:40 AM PST Researchers have decoded the genetic blueprint of the rock pigeon, unlocking secrets about pigeons' Middle East origins, feral pigeons' kinship with escaped racing birds, and how mutations give pigeons traits like a fancy feather hairdo known as a head crest. |
| Vegetation changes in cradle of humanity: Study raises questions about impact on human evolution Posted: 31 Jan 2013 09:13 AM PST What came first: the bipedal human ancestor or the grassland encroaching on the forest? A new analysis of the past 12 million years' of vegetation change in the cradle of humanity is challenging long-held beliefs about the world in which our ancestors took shape -- and, by extension, the impact it had on them. |
| Gene finding may lead to treatments effective against all MRSA strains Posted: 31 Jan 2013 09:06 AM PST New research has pinpointed a gene that causes the dominant strain of MRSA infection to linger on the skin longer than other strains, allowing it to be passed more readily from one person to the next. In uncovering this property, researchers have identified a novel target for developing new treatments against methicillin-resistant Staphylococcus aureus. |
| Study rebuts hypothesis that comet attacks ended 9,000-year-old Clovis culture Posted: 31 Jan 2013 06:53 AM PST Comet explosions and asteroid impacts could not have ended 9,000-year-old Clovis culture, a new study contends. |
| Posted: 31 Jan 2013 06:53 AM PST Humans alone were responsible for the demise of Australia's iconic extinct native predator, the Tasmanian Tiger or thylacine, a new study has concluded. |
| Aztec conquest altered genetics among early Mexico inhabitants, new DNA study shows Posted: 31 Jan 2013 06:52 AM PST For centuries, the fate of the original Otomi inhabitants of Xaltocan, the capital of a pre-Aztec Mexican city-state, has remained unknown. Researchers have long wondered whether they assimilated with the Aztecs or abandoned the town altogether. According to new anthropological research, the answers may lie in DNA. |
| Biologistics: How fast do chemical trains move in living cells? Posted: 31 Jan 2013 06:52 AM PST The rate of chemical processes in cells is dictated by the speed of movement (diffusion) of molecules needed for a given reaction. Using a new versatile method, researchers were able to predict for the first time the diffusion coefficients of all proteins in Escherichia coli. The achievement is important not only for biologists and chemists, but also for... transport companies. |
| Cyclone did not cause 2012 record low for Arctic sea ice Posted: 31 Jan 2013 06:52 AM PST It came out of Siberia, swirling winds over an area that covered almost the entire Arctic basin in the normally calm late summer. It came to be known as "The Great Arctic Cyclone of August 2012," and for some observers it suggested that the historic sea ice minimum may have been caused by a freak summer storm, rather than warming temperatures. But new results show that the August cyclone was not responsible for last year's record low for Arctic sea ice. |
| Protein origami: Quick folders are the best Posted: 31 Jan 2013 05:44 AM PST The evolutionary history of proteins shows that protein folding is an important factor. Especially the speed of protein folding plays a key role. This was the result of computer analysis. For almost four billions of years, there has been a trend towards faster folding. |
| 24 new species of flower fly have been found in Central and Southern America Posted: 31 Jan 2013 05:44 AM PST Scientists have described twenty four new species of dipterans belonging to Quichuana genus, of which only a further 24 species were known. The researchers have been studying the forests of Central and Southern America for ten years and they have now published their results. |
| Disappearing homing pigeon mystery solved Posted: 30 Jan 2013 03:41 PM PST Homing pigeons are remarkable navigators. Although they are able to find their loft from almost any location, they do get lost occasionally. The reason why had been a mystery until a scientist wondered if the birds use the loft's infrasound signature as a homing beacon to get their bearings. He discovered that the atmosphere misdirected the loft's infrasound signal on days when pigeons were lost, preventing them from finding the correct bearing home. |
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