ScienceDaily: Top Environment News |
- Humans, chimpanzees and monkeys share DNA but not gene regulatory mechanisms
- Saber-toothed cats and bear dogs: How they made cohabitation work
- Bacteria talk to each other and our cells in the same way, via molecules
- Strange diet for methane-consuming microorganisms
- New computational method for timing the tree of life
- Earth on acid: Present & future of global acidification
- 2011 Virginia earthquake triggered landslides at extraordinary distances
| Humans, chimpanzees and monkeys share DNA but not gene regulatory mechanisms Posted: 06 Nov 2012 05:11 PM PST Up to 40 percent of the differences in the expression or activity patterns of genes between humans, chimpanzees and rhesus monkeys can be explained by regulatory mechanisms that determine whether and how a gene's recipe for a protein is transcribed to the RNA molecule that carries the recipe instructions to the sites in cells where proteins are manufactured. |
| Saber-toothed cats and bear dogs: How they made cohabitation work Posted: 06 Nov 2012 04:16 PM PST The fossilized fangs of saber-toothed cats hold clues to how the extinct mammals shared space and food with other large predators 9 million years ago. |
| Bacteria talk to each other and our cells in the same way, via molecules Posted: 06 Nov 2012 08:42 AM PST Bacteria can talk to each other via molecules they themselves produce. The phenomenon is called quorum sensing, and is important when an infection propagates. Now, researchers are showing how bacteria control processes in human cells the same way. |
| Strange diet for methane-consuming microorganisms Posted: 06 Nov 2012 08:41 AM PST Methane is formed under the absence of oxygen by natural biological and physical processes, e.g. in the sea floor. It is a much more powerful greenhouse gas than carbon dioxide. Thanks to the activity of microorganisms, this gas is inactivated before it reaches the atmosphere and unfolds its harmful effects on Earth's climate. Researchers have now demonstrated that these microorganisms are quite picky about their diet. |
| New computational method for timing the tree of life Posted: 06 Nov 2012 07:20 AM PST A scientist has developed a new method for calculating species divergence, delivering accurate results at 1,000 times the speed of conventional techniques. |
| Earth on acid: Present & future of global acidification Posted: 06 Nov 2012 06:27 AM PST Climate change and extreme weather events grab the headlines, but there is another, lesser known, global change underway on land, in the seas, and in the air: acidification. |
| 2011 Virginia earthquake triggered landslides at extraordinary distances Posted: 06 Nov 2012 06:27 AM PST The 2011 Mineral, Virginia M-5.8 earthquake was felt over an extraordinarily large area. A new study details landslides triggered by the earthquake at distances four times greater and over an area 20 times larger than previously documented for M-5.8 earthquakes worldwide. |
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