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Big-Mouthed Toucans Key To Forest Evolution

As humans have cut into Brazil's forests, the toucan population has taken a dive. The trees, in turn, have changed, too: Without large-billed birds to eat fruit with big seeds, only trees with small seeds thrive. Eventually, one scientist says, "the impacts on the forest could be quite dramatic."
NPR

Michigan Tracks Cattle From Birth To Plate

Would you like to know the life history of that steak before you eat it? Technology exists to give you that information, at least in Michigan, where the state government requires all cattle to carry an electronic tag for tracking purposes.
NPR

Baton Rouge's Corroded, Overpolluting Neighbor: Exxon Mobil

The Standard Heights neighborhood sits next to the nation's second-largest gasoline refinery. Recently, residents learned a new truth about the plumes of exhaust they see every day: Exxon Mobil's aging refinery and petrochemical facilities — like many others — are pumping out far more pollution than the law allows.
NPR

Headed To Mars? Watch Out For Cosmic Rays

The dose of radiation an astronaut would experience on a trip to Mars is higher than the annual limit set for workers at nuclear power plants. But Mars enthusiasts say the radiation threat isn't high enough to cancel the trip.
NPR

Smelted In Space? Ancient Iron Beads Linked To Meteorite

Since its discovery in 1911, an Egyptian iron bead has sparked debate over how it was produced — made around 3,300 BC, it predates the region's first known iron smelting by thousands of years. Now researchers say the iron was made in space, and delivered to Earth via meteorite.
NPR

GMO Wheat Found In Oregon Field. How Did It Get There?

An Oregon farmer discovered the genetically engineered wheat growing in his field about a month ago. Nobody knows how it got there, how widely it has spread, or whether it has been in fields harvested for food. GMO wheat is not approved for sale in the U.S.

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