ScienceDaily: Top Environment News |
- Twice as many emperor penguins as thought in Antarctica, first-ever penguin count from space shows
- Direct transfer of plant genes from chloroplasts into the cell nucleus: Gene function preserved despite structural differences in the DNA
- Decoding worm lingo: Eradicating parasites that speak same language
- Resurfacing urban areas to offset 150 billion tons of CO2
- European dung-fly females all aflutter for large males
- How to curb discharge of the most potent greenhouse gas: 50-percent reduction in meat consumption and emissions
- Poor spring rain projected in Africa
| Twice as many emperor penguins as thought in Antarctica, first-ever penguin count from space shows Posted: 13 Apr 2012 11:53 AM PDT A new study using satellite mapping technology reveals there are twice as many emperor penguins in Antarctica than previously thought. The results provide an important benchmark for monitoring the impact of environmental change on the population of this iconic bird, which breeds in remote areas that are very difficult to study because they often are inaccessible with temperatures as low as -58 degrees Fahrenheit.  |
| Posted: 13 Apr 2012 09:19 AM PDT Chloroplasts, the plant cell's green solar power generators, were once living beings in their own right. This changed about one billion years ago, when they were swallowed up but not digested by larger cells. Since then, they have lost much of their autonomy. As time went on, most of their genetic information found its way into the cell nucleus; today, chloroplasts would no longer be able to live outside their host cell. Scientists in Scientists have now discovered that chloroplast genes take a direct route to the cell nucleus, where they can be correctly read in spite of their architectural differences.  |
| Decoding worm lingo: Eradicating parasites that speak same language Posted: 13 Apr 2012 07:13 AM PDT All animals seem to have ways of exchanging information -- monkeys vocalize complex messages, ants create scent trails to food, and fireflies light up their bellies to attract mates. Yet, despite the fact that nematodes, or roundworms, are among the most abundant animals on the planet, little is known about the way they network. Now, biologists have shown that a wide range of nematodes communicate using a recently discovered class of chemical cues.  |
| Resurfacing urban areas to offset 150 billion tons of CO2 Posted: 13 Apr 2012 07:13 AM PDT Imagine a world where the rooftops and pavements of every urban area are resurfaced to increase the reflection of the sun's light rays. Well, this is exactly what a group of Canadian researchers have simulated in an attempt to measure the potential effects against global warming.  |
| European dung-fly females all aflutter for large males Posted: 13 Apr 2012 07:11 AM PDT European dung fly females prefer large males, making them the driving selective force behind the rare phenomenon in insects of large males and small females. This is what evolutionary ecologists discovered when they compared North American and European dung flies, which not only differ in sexual size dimorphism (SSD), but also in their mating behavior.  |
| Posted: 13 Apr 2012 07:08 AM PDT A new study found that meat consumption in the developed world would need to be cut by 50 percent per person by 2050, and emissions in all sectors -- industrial and agricultural -- would need to be reduced by 50 percent if we are to meet the most aggressive strategy set by the Intergovernmental Panel on Climate Change (IPCC), to reduce the most potent of greenhouse gases, nitrous oxide (N2O).  |
| Poor spring rain projected in Africa Posted: 12 Apr 2012 11:18 AM PDT Spring rains in the eastern Horn of Africa are projected to begin late this year and be substantially lower than normal. From March to May, the rains are expected to total only 60 to 85 percentage of the average rainfall in this region. This is a significant deterioration compared to earlier forecasts.  |
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