Brazilian use of flex-fuel cars, which run on any mix of gasoline and ethanol, have prevented 83.5 million metric tons of carbon dioxide emissions since 2003, according to UNICA, the country’s main sugarcane growers association. The amount of the greenhouse gases such vehicles prevented from entering the environment is equal about a fifth of annual emissions in Brazil, the world’s eighth-largest economy, according to the United Nations. Thanks to laws requiring hydrous ethanol pumps in all filling stations in Brazil and requiring all gasoline blends to be 20-25% anhydrous ethanol, biofuels made up 22.3% of fuel use in 2009, 14% more than 2008. (See related article: EPA Confims Sugarcane Ethanol is a Low Carbon, Advanced Renewable Fuel).
Greenhouse Effect - Climate Change - 氣候變化 - 温室効果 - Mudanças Climáticas
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Something Dark Is Growing on Greenland’s Ice. And Melting It Faster. New studies show how algae grows on ice and snow, creating “dark zones” that exacerbate melting in the consequential region.
A supraglacial stream flowing over the ice in Greenland. Patches of clean ice are intermixed with ice darkened by glacier ice algae. Credi...
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Solar panels and wind turbines in Shandong Province, China, in June. Credit... Agence France-Presse — Getty Images By Max Bearak ...
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By Laura Paddison A dark geometric sprawl breaks up an expanse of ocher-hued sand in Saudi Arabia. Close up, the structure ...
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Fishing boats sail toward a kelp harvest area in the Northern Territories, 3.7 kilometers off Nemuro, Hokkaido, Japan on June 2, 2018. Fis...
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