Science & Environment

When the X-ray was invented, people clamored to get one. Not for any medical reason, but just to see what was typically hidden inside their bodies.

Something like that seems to be happening with DNA sequencing technology. First it was companies offering to sequence people's genomes. Now it's learning all about your microbiome, the collection of microorganisms living on and in your body.

What do you do when you're a scientist and you have no job and no money for your research? If you're Ethan Perlstein, you try crowd funding. He raised $25,000 to investigate where the drug methamphetamine is stored in the brain.

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Transcript

LINDA WERTHEIMER, HOST:

Earlier this week, NPR aired a three-part investigation of the Marine Stewardship Council on Morning Edition and All Things Considered.

As Daniel Zwerdling and Margot Williams reported, the MSC certifies seafood that is supposed to be good for the environment. But some environmental groups argue that the label is misleading, and that as more retailers promise to sell only sustainable-labeled seafood, the program is certifying fisheries that don't deserve it.

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. It's about the size of the bomb that devastated Hiroshima in World War II.

But it's not so easy to verify the claim that the nuclear explosive has also been miniaturized. That's a critical claim because a small warhead would be essential if the rogue regime chose to threaten the United States with a nuclear-tipped missile.

Big bombs are easier to make, but they aren't all that useful as a threat.

This week, our colleagues Daniel Zwerdling and Margot Williams with NPR's investigations unit have a terrific three-part series on the Marine Stewardship Council. As they report, the MSC's labels tell consumers which seafood is supposed to be good or bad for the environment.