Heme channel found
15 minutes ago |
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In some ways a cell in your body or an organelle in that cell is like an ancient walled town. Life inside either depends critically on the intelligence of the gatekeepers.
Headwater stream nutrient enrichment disrupts food web
5 minutes ago |
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Human activity is increasing the supply of nutrients, such as nitrogen and phosphorus, to stream systems all over the world. The conventional wisdom -- bolstered by earlier research -- has held that these additional nutrients ...
New research explains orchids' sexual trickery
5 minutes ago |
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A new study reveals the reason why orchids use sexual trickery to lure insect pollinators. The study, published in the January issue of The American Naturalist, finds that sexual deception in orchids leads to a more effici ...
Large-scale sequencing: The future of genomic sciences?
25 minutes ago |
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Scientists can gain insights into new ways to use microorganisms in medicine and manufacturing through a coordinated large-scale effort to sequence the genomes of not just individual microorganisms but entire ecosystems, ...
Researchers revise long-held theory of fruit-fly development
1hour ago |
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For decades, science texts have told a simple and straightforward story about a particular protein—a transcription factor—that helps the embryo of the fruit fly, Drosophila melanogaster, pattern tissues in a m ...
Wild chimps have near human understanding of fire, study says
1hour ago |
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(PhysOrg.com) -- The use and control of fire are behavioral characteristics that distinguish humans from other animals. Now, a new study by Iowa State University anthropologist Jill Pruetz reports that savanna ...
UNSW students sequence genome of the Wollemi Pine
1hour ago |
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(PhysOrg.com) -- UNSW students have sequenced the chloroplast genome of the ancient Wollemi Pine - a world first that could reveal how a "dinosaur" of the tree kingdom survived 200 million years of shifting ...
Study shows loss of 15-42 percent of mammals in North America
5 hours ago |
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If the planet is headed for another mass extinction like the previous five, each of which wiped out more than 75 percent of all species on the planet, then North American mammals are one-fifth to one-half the way there, according ...
New report underlines multiple benefits but also new challenges to biodiversity-rich sites
6 hours ago |
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An agreement in Copenhagen to fund reduced emissions from deforestation may generate multiple environmental and economic benefits if investments simultaneously target sites that are both carbon and biodiversity-rich.
Umbilical cord could be new source of plentiful stem cells, researchers say
6 hours ago |
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Stem cells that could one day provide therapeutic options for muscle and bone disorders can be easily harvested from the tissue of the umbilical cord, just as the blood that goes through it provides precursor cells to treat ...
Scientists works to develop Christmas tree that doesn't shed needles
4 hours ago |
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After chasing the perfect Christmas tree for three decades, Gary Chastagner could be getting close.
Invasion without a stir
7 hours ago |
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Bacteria of the genus Salmonella cause most food-borne illnesses. The bacteria attach to cells of the intestinal wall and induce their own ingestion by cells of the intestinal epithelium. Up till now, researchers assumed ...
Among Apes, Teeth Are Made for the Toughest Times (w/ Video)
23 hours ago |
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(PhysOrg.com) -- The teeth of some apes are formed primarily to handle the most stressful times when food is scarce, according to new research performed at the National Institute of Standards and Technology. The findings ...
Study reveals lack of diversity in embryonic stem cell lines
23 hours ago |
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The most widely used human embryonic stem cell lines lack genetic diversity, a finding that raises social justice questions that must be addressed to ensure that all sectors of society benefit from stem cell advances, according ...
Zoning the ocean may help endangered whales to recover
20 hours ago |
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Scientists in Scotland, Canada and the US have proposed a new method to identify priority areas for whale conservation. The team's findings, published in Animal Conservation, suggest that even small protected areas, identi ...
