February 27, 2009:The Department of Transportation has designated 10 new incremental high-speed rail corridors around the country, and as more federal funding becomes available, these will stand at the head of the receiving line.(0) Comments
February 29, 2008:In the carbon cycle, it's not just about the individual tree-the entire forest plays a role. Leaves take in carbon dioxide, converting it to sugar, which is carbon-based. Some of the sugar is used immediately for energy, converted back to CO2, and released into the atmosphere. The rest is stored in living wood or dead matter, such as fallen leaves and branches. Old-growth forests, in particular, store vast amounts of carbon while continuing to absorb CO2.(1) Comments
December 1, 2007:Climate change holds the potential to profoundly affect epidemiologic patterns, and vector biologist Andrew Githeko says malaria is particularly sensitive to this upheaval.(1) Comments