ScienceDaily: Top Environment News |
- Evidence of past Southern hemisphere rainfall cycles related to Antarctic temperatures
- Power generation is blowing in the wind
- Fruit flies watch the sky to stay on course
- Ice age findings forecast problems: Data from end of last Ice Age confirm effects of climate change on oceans
- Solutions for a nitrogen-soaked world
- 'Green' pesticide effective against citrus pests
- Biologists replicate key evolutionary step
| Evidence of past Southern hemisphere rainfall cycles related to Antarctic temperatures Posted: 17 Jan 2012 01:16 PM PST Geoscientists have published the first evidence that warm-cold climate oscillations well known in the Northern Hemisphere over the most recent glacial period also appear as tropical rainfall variations in the Amazon Basin of South America. It is the first clear expression of these cycles in the Southern hemisphere.  |
| Power generation is blowing in the wind Posted: 17 Jan 2012 01:16 PM PST By looking at the stability of the atmosphere, wind farm operators could gain greater insight into the amount of power generated at any given time. Power generated by a wind turbine largely depends on the wind speed. In a wind farm in which the turbines experience the same wind speeds but different shapes (such as turbulence) to the wind profile, a turbine will produce different amounts of power.  |
| Fruit flies watch the sky to stay on course Posted: 17 Jan 2012 01:14 PM PST New research demonstrates that fruit flies keep their bearings by using the polarization pattern of natural skylight, bolstering the belief that many, if not all, insects have that capability.  |
| Posted: 17 Jan 2012 01:14 PM PST Data from end of the last Ice Age confirm effects of climate change on oceans The first comprehensive study of changes in the oxygenation of oceans at the end of the last Ice Age (between about 10 to 20,000 years ago) has implications for the future of our oceans under global warming.  |
| Solutions for a nitrogen-soaked world Posted: 17 Jan 2012 11:51 AM PST Nitrogen is both an essential nutrient and a pollutant, a byproduct of fossil fuel combustion and a fertilizer that feeds billions, a benefit and a hazard, depending on form, location, and quantity. Agriculture, industry and transportation have spread nitrogen liberally around the planet, say scientists with complex and interrelated consequences for human and ecological health.  |
| 'Green' pesticide effective against citrus pests Posted: 17 Jan 2012 11:51 AM PST Researchers have discovered a key amino acid essential for human nutrition is also an effective insecticide against caterpillars that threaten the citrus industry.  |
| Biologists replicate key evolutionary step Posted: 17 Jan 2012 11:43 AM PST More than 500 million years ago, single-celled organisms on the Earth's surface began forming multicellular clusters that ultimately became plants and animals. Just how that happened is a question that has eluded evolutionary biologists.  |
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