Tree mighty appetite
Forests worldwide sop up estimated metric tons of carbon per year 2.4 billion from the atmosphere, the new calculation shows, mainly in the form of carbon dioxide. But because many of the existing stands of forest get harvested each year and includes their stored carbon, the net result is little more than 1 billion tonnes more carbon entering the forests than leaving, an international team of scientists reports online on 14 July in science. Although the amount of carbon sequestration in the environment was known for large, exactly how much it was stored in the environment and where — such as in trees — was uncertain. — Janet Raloff
Growing climate Paradox
Release the two gases warming will accelerate in response to the growing carbon dioxide emissions. Carbon dioxide fertilizes plant growth, which involves gas in the tissues of the plant and soil. This environment should slow the anticipated capture acceleration of global warming. However, measurements by scientists in the United States and in Ireland now show that coal due to fertilizers can also help promote soils release nitrous oxide and methane, both wetlands and release of greenhouse gases. Such emissions can erase more than 16 per cent of the benefits of climate, expect from carbon sequestration in the soil, scientists report 14 July in nature. — Janet Raloff
Plastics compound may slow down the boys ' development
The higher a woman pregnant exposure to phthalates — compounds used in plastics and as solvents — the more likely it is her son will score a little low on the standard indices of mental and motor development for 6 months. Developmental point for girls showed no link to phthalates, researchers in Korea report online on July 7, in environmental health perspectives. Other studies have also shown to be more sensitive than males girls prenatal phthalate exposure. Urinary markers of three phthalates — each count in the third trimester of pregnancy — were somewhat lower among 460 Korean moms study than in some studies of American women. — Janet Raloff
In terms of uranium
The catch with nuclear smugglers could become a tad, easier with a new way to tell where the sample of uranium came from key viewed in a group of chemical elements, known as the rare, the scientists of the Nancy-Université in France write in August, the Terra Nova. The team analyses the uranium oxides from 18 locations across the globe to find the unique chemical elements game, rare earth beside the uranium ore was found. Various configurations are combined geological conditions in which rocks, researchers say. The method could help identify the source of the przemycanego uranium. — Alexandra Witze
Found in: Earth and environment
No comments:
Post a Comment