TOP 100 CAMPING SITES
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| Planes, trains, or automobiles? Air travel may be no worse for the environment than rail Jetsetters get a bad rap for their role in spewing greenhouse gases into the upper atmosphere, but a new study says that flying is really no worse for the environment than taking the train. [More] rss.sciam.com |
SEC may mandate corporate climate disclosures Just as Wal-Mart’s plan to start eco-labeling its products is splashing down into the summer corporate news kiddie pool, the U.S. Securities and Exchange Commission (SEC) is in talks about making companies do some serious environmental reporting of their own. [More] rss.sciam.com |
Building a Better Lithium Ion Battery The powerful lithium-based batteries used in electric vehicle systems, laptops and cell phones are prone to overheating and even blowing up , but adding less than a gram of a new substance could keep both temperatures and costs down, federal researchers say.The molecule, developed by researchers Khalil Amine and Zonghai Chen at Argonne National Laboratory , is being tested as an additive in the electrolyte of lithium batteries to keep cell voltage from going too high. [More] rss.sciam.com |
The Long-Lost Siblings of the Sun (preview) People have often sought solitude in the starry night sky, and it is an appropriate place for that. The night is dark because, in cosmic terms, our sun and its family of planets are very lonely. Neighboring stars are so far away that they look like mere specks of light, and more distant stars blur together into a feeble glow. Our fastest space probes will take tens of thousands of years to cross the distance to the nearest star. Space isolates us like an ocean around a tiny island.Yet not all stars are so secluded. About one in 10 belongs to a cluster, a swarm of hundreds to tens of thousands of stars with a diameter of a few light-years. In fact, most stars are born in such groups, which generally disperse over billions of years, their stars blending in with the rest of the galaxy. What about our sun? Might it, too, have come into existence in a star cluster? If so, our location in the galaxy was not always so desolate. It only became so as the cluster dispersed in due time. [More] rss.sciam.com |
Arizona: Parks Are Casualties of Budget Cuts The Arizona State Parks Board has voted unanimously to close 13 parks in response to budget cuts. nytimes.com |