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In 1958, James Van Allen described two belts of radiation that surround Earth. Daniel Baker says that when a satellite was launched to study the belts in 2012, it saw a third belt form, which lasted for about a month before being blasted away by an interplanetary shock wave.

It’s lawnmower season but some homeowners and others say it’s time to shift from well-trimmed lawns to more environmentally friendly landscaping.

German filmmaker Werner Herzog talks about Grizzly Man, a documentary about actor Timothy Treadwell, who spent 13 years with Alaska's grizzly bears.

The president has called for natural gas to serve as a "bridge fuel" to renewable energies, but there are concerns that the country would settle before transitioning to renewable sources.

Author Richard Louv talks about his new book, Last Child in the Woods: Saving Our Children from Nature Deficit Disorder. Louv argues that kids are so plugged into television and video games that they've lost their connection to the natural world.

Chesapeake Energy is still a leader in America's "fracking"-fueled natural gas boom, but low natural gas prices are making the company less profitable. Now the company is selling some of its assets and shifting more of its efforts into oil and other energy sectors to try to boost its bottom line.

In a series of reports for Radio Expeditions, Elizabeth Arnold journeys to Sri Lanka with one of the first teams to assess the environmental aftermath of the deadly Indian Ocean tsunami.

Taxidermists, muralists and a crew of others have spent years sprucing up the Hall of North American Mammals at the American Museum of Natural History in New York City. On Saturday, the hall reopens to the public. Weekend Edition host Scott Simon talks with curator Ross MacPhee about the project.

The string of genes that make a man a man used to be much bigger, and some geneticists say it may be wasting away. Back off, others say. Y has been stable — and crucial — for millennia.

After Tonawanda's residents got sick, they vowed to fight high levels of hazardous chemicals emitting from a dilapidated plant. In doing so, they found weaknesses in how EPA regulates air pollution.