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February 12, 2013 North Korea's latest nuclear weapons test is much more powerful than the previous two, according to estimates made by instruments that measure seismic waves from the blast. But it's hard to verify North Korea's claim that the test was of a miniaturized nuclear weapon.

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February 12, 2013 A new smartphone app allows users to document falling precipitation in their location. The mPING app aims to help weather officials program radar to determine exactly what's falling near you. For example, is it hail or mixed rain?

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February 12, 2013 Environmentalists, together with the Marine Stewardship Council, say that Day Boat's story reflects the good that the MSC system can do. But critics say the vigorous certification process is inconsistent.

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February 12, 2013 Consumers are increasingly being marketed seafood with labels that are supposed to certify that it's good for the environment. We asked about consumers' seafood eating habits and whether they prefer to buy "sustainably caught" fish.

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February 12, 2013 A channel on YouTube lets you see what goes on deep in the bowels (excuse the expression) of a natural history museum. There are dead things in jars, drawers and basements, but best of all, there's Emily, who hosts the show. She's a volunteer curatorial assistant/storyteller who could make a thumbtack interesting.

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February 12, 2013 Most fisheries certified by the MSC system have conditions that spell out how they have to change their operations to comply with MSC standards. But they can still be labeled "certified sustainable seafood" even though they have years to comply.

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February 11, 2013 Manure from pig farms doesn't just contain residues of antibiotics used in livestock. It also carries high concentrations of antibiotic-resistant bacteria, a new study of Chinese pig farms finds. And researchers say "it's a global problem."

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February 11, 2013 Industry demand for the "sustainable seafood" label, issued by the Marine Stewardship Council, is increasing. But some environmentalists fear fisheries are being certified despite evidence showing that the fish population is in trouble — or when there's not enough information to know the impact on the oceans.

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February 11, 2013 Everybody knows you need a chicken to lay an egg. Everybody knows you need an egg to produce a chicken. What nobody knows is how the cycle started. Here's a new take, that leans eggwards — and it's fun to watch.

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February 10, 2013 As NASA moves away from manned missions, the private sector is taking on the task. Those hoping for a ride are as eager as ever, and space exploration hasn't lost a bit of its luster.

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February 10, 2013 Although you can't hear anything in space, scientists can still use sound to understand the solar system by turning data collected by NASA satellites into sounds and music. Listen to how one sonification specialist creates music out of eruptions on the sun.

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February 10, 2013 Every few million years or so, the Earth burps up a super volcano that can erupt continuously for thousands of years. A scientist who's mapping the planet's interior has an idea about what causes these super volcanoes and when we might expect another one.

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On Weekend Edition SundayPlaylist

February 9, 2013 In the town of Leesburg, Va., a flock of 200 turkey vultures takes over suburban backyards every few years. Despite their seeming abundance, the birds are protected by federal law, so the residents called in backup for some official vulture harassment.

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February 9, 2013 Drop a cat from a bed, a chair or a tree, and it will do its wriggly thing and land on all four feet. Cats are famous for this. But we've discovered an animal that does it better. Meet the new champ.

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