Fundamental disagreements among the nations attending the U.N. climate conference in Durban, South Africa, may stall a possible deal. There's still no consensus about the best way to move forward with an international agreement to reduce greenhouse gas emissions.
Climate experts are thinking about growing dense fields of weeds to help soak up carbon dioxide from the atmosphere. This would require flooding dense, carbon-rich wetland soils of the San Joaquin Valley, and farmers hope money they make from capturing greenhouse gases would make up for the lost acreage.
For more than half of the past 60 days, the air pollution in the Chinese capital has hit levels hazardous to human health. Experts estimate long-term exposure to such pollution could reduce life expectancy by as much as five years. NPR's Louisa Lim describes what it's like living in the city.
California's radical new law will put a statewide cap on the amount of greenhouse gases coming out of smokestacks and tailpipes. Utility costs will no doubt rise, but advocates of the law say it will also create new businesses and spur development and deployment of green technologies.
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