Windows treated with an insulating film are twice as efficient as regular double-pane windows, since they block heat from entering a building. That's useful on warm days, but inefficient when it's cold. One lab is researching a new coating that could be turned on and off with an electrical current.
A presidential pledge to reduce emissions two years ago went nowhere in Congress. Today, the U.S. is spewing more carbon dioxide than ever into the atmosphere. Without meaningful U.S. action on emissions, a global pact seems unlikely to emerge from U.N. climate talks under way in Durban, South Africa.
Bush meat has been a critical part of the Malagasy diet, warding off anemia and malnutrition. The challenge: Balancing the needs of local people in cases where tasty wildlife is also critically endangered.
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