ScienceDaily: Top Environment News |
- Russian asteroid strike: Numerous injuries, significant damage
- Humans and chimps share genetic strategy in battle against pathogens
- Nitric oxide: A little molecule's remarkable feat -- prolonging life, worm study shows
| Russian asteroid strike: Numerous injuries, significant damage Posted: 15 Feb 2013 04:21 PM PST A space rock a few metres across exploded in Earth's atmosphere above the city of Chelyabinsk, Russia today (Feb. 15, 2013) at about 03:15 GMT. The numerous injuries and significant damage remind us that what happens in space can affect us all. |
| Humans and chimps share genetic strategy in battle against pathogens Posted: 14 Feb 2013 11:16 AM PST A search for long-lived balancing selection has found at least six regions of the genome where humans and chimpanzees share a combination of genetic variants. These human genetic variation dates back to a common ancestor with chimpanzees millions of years ago, before the species split. |
| Nitric oxide: A little molecule's remarkable feat -- prolonging life, worm study shows Posted: 14 Feb 2013 10:26 AM PST Nitric oxide, the versatile gas that helps increase blood flow, transmit nerve signals, and regulate immune function, appears to perform one more biological feat -— prolonging the life of an organism and fortifying it against environmental stress, according to a new study. |
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