TOP 100 CAMPING SITES
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| ExxonMobil guilty in deaths of migratory birds in five states ExxonMobil pled guilty to five violations of the federal Migratory Bird Treaty Act stemming from the deaths of 85 protected birds at natural gas facilities in five states, including Texas and Colorado, the Justice Department said today. [More] rss.sciam.com |
Rare Frog Species Bear the Brunt of Chytrid, a Deadly Fungal Disease Threats to wildlife survival, such as habitat loss and climate change, tend to strike some species harder than others, and the threat of chytrid , a deadly amphibian fungus, appears to be no different. A study published in this month's Ecology Letters finds that rarer species were more likely to disappear , leading to loss of frog biodiversity in Central America. [More] rss.sciam.com |
Draft text of new "Copenhagen Accord" Here is the latest draft text of the " Copenhagen Accord " put forward on December 18 by the U.S., China, India and South Africa, among other countries, at the climate summit in the Danish capital. Copenhagen Accord [More] rss.sciam.com |
Breaking the Growth Habit: A Q&A with Bill McKibben The April issue of Scientific American includes an exclusive excerpt from Bill McKibben's new book, Eaarth: Making a Life on a Tough New Planet , plus an interview that challenges his assumptions. Expanded answers to key interview questions, and additional queries and replies, appear here. [More] rss.sciam.com |
A New Form of Chlorophyll? Researchers may have found a new form of chlorophyll, the pigment that plants, algae and cyanobacteria use to obtain energy from light through photosynthesis . Preliminary findings published August 19 in Science suggest that the newly discovered molecule, dubbed chlorophyll f, has a distinct chemical composition when compared with the four known forms of chlorophyll and can absorb more near-infrared light than is typical for the photosynthetic pigments. Chlorophyll f, which was extracted from cultures of cyanobacteria and other oxygenic microorganisms, may allow certain photosynthetic life forms to harvest energy from wavelengths of light that many of their competitors cannot use."This is the most red-shifted chlorophyll we have found in nature," says Min Chen , a biologist at The University of Sydney in Australia and lead author of the study. "That means that organisms that have this chlorophyll inside can extend their photosynthetic range for maximum use of solar energy." [More] Australia - Chlorophyll - University of Sydney - Photosynthesis - Algae rss.sciam.com |