Coral reefs are in trouble worldwide, from a host of threats, including warming ocean temperatures, nutrient runoff and increasing ocean acidity. A noted climate scientist from California has been conducting an experiment on Australia's Great Barrier Reef to see whether antacid could boost coral growth.
The melting of ice in the northern latitudes is feeding new industries. Among them: speculating for petroleum products where vast amounts of undiscovered oil and natural gas are believed to be, and hunting for mammoth tusks unearthed in the softening tundra.
Countless movies were filmed there, including Tarzan and Creature From the Black Lagoon. With its wildlife and freshwater springs, Silver Springs in Central Florida was one of the state's most popular tourist destinations. Those waters have receded now as the delicate ecosystem suffers from problems that threaten the entire state.
A new photography exhibit at the National Archives explores Documerica, a little-known Environmental Protection Agency project created in the 1970s. Photographers commissioned by the agency traveled around the country, capturing images of environmental pollution, as well as a changing society.
The late Venezuelan president Hugo Chavez believed in sharing his country's oil wealth with his Latin American neighbors. But now, Venezuelans are electing a new leader, and there are questions about whether the new president will continue those policies. NPR's Tom Gjelten talks about the effects of Venezuela's oil diplomacy, from Cuba to Connecticut.
Last month monarch butterflies began an annual northward journey from their overwintering habitat in Mexico. Monarch expert Lincoln Brower discusses the dwindling monarch populations, and explains how habitat loss in Mexico and a decline in milkweed plant numbers in the U.S. may be harming the familiar orange and black fliers.
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