When farmers in McCracken County, Ky., need help identifying a crop-eating pest or fencing in a herd of miniature horses, they call Doug Wilson. But these days, the agricultural extension agent is the one seeking advice, as he tries to help his county's agriculture sector wrestle with one of its emerging problems: climate change. A new crop of opinion polls suggests many U.S. farmers believe the climate is changing, but few lay the blame on man-made greenhouse gas emissions. Fewer still favor policies to cut greenhouse gas emissions. Go to story #1

In the middle of the night, Casandra Cabrera stopped breathing. She doubled over in bed, gasping for air. The asthma attack continued for 10 long minutes. The San Joaquin Valley, Calif., teenager lives in a state where more than 5 million people have been diagnosed with asthma, which is caused, in part, by contamination from nitrogen compounds. Climate change is expected to compound the issue, according to a new body of work published in the journal Issues in Ecology. Go to story #2