TOP 100 CAMPING SITES
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| How Much Is Too Much?: Estimating Greenhouse Gas Emissions To avoid catastrophic climate change, the world will need to emit less than one trillion metric tons of carbon between now and 2050, according to two new papers published in Nature today. In other words, there is only room in the atmosphere to burn or vent less than one quarter of known oil, natural gas and coal reserves. [More] rss.sciam.com |
Earth's Fried Far-Future Postponed [The following is an exact transcript of this podcast.]About a billion years from now, some scientists say, the sun will be too bright for comfort, and our formerly hospitable planet will no longer be able to support life. If visions of this impending heat death disturb you, researchers from the California Institute of Technology have some good news. Their calculations add at least another billion years to Earth’s expiration date, results published in the Proceedings of the National Academy of Sciences. [More] Presented By:You Need the Speed of Norton 2009Introducing the revolutionary Norton Internet Security 2009. With a one-click, one-minute install, under 7MB of memory usage and fewer, shorter scans, it?s the fastest security suite anywhere. Get your FREE trial today!Click to Learn More www.norton.com/speed Ads by Pheedo rss.sciam.com |
Cut Back on Tamiflu, U.S. Official Says The director of the National Center on Immunization and Respiratory Diseases said that summer camps should cease handing out Tamiflu to healthy campers. nytimes.com |
Mighty microbes might help clean up oil extraction and radioactive wastes There appears to be literally nothing microbes cannot do. From the invention of photosynthesis to lifecycles that require no sunlight --even surviving extreme radiation --the most extreme microbes thrive almost everywhere scientists look. And now microbiologists have added two more energy-related tricks to the microbial arsenal. [More] rss.sciam.com |
Heavy Metal: Researchers Try to Get the Lead out of Piezoelectronics Gadget makers often rely on piezoelectricity --the ability that some solids have to produce voltage when pressure is applied to them--to power tiny embedded systems, such as a BlackBerry Storm 2's touch screen or a car's airbag sensor . Whereas lead-based compounds typically have the greatest piezoelectric potential, the heavy metal has fallen out of favor as device-makers push to eliminate it from all electronics in an attempt to reduce toxic waste . [More] rss.sciam.com |