Science

Science
2:44 am
Wed January 22, 2014

Ancient And Vulnerable: 25 Percent Of Sharks And Rays Risk Extinction

Each year, 6 to 8 percent of the global population of sharks and rays gets caught, scientists say. The fish can't reproduce fast enough to keep pace
Mike Johnston Flickr

Originally published on Wed January 22, 2014 8:23 am

There are more than a thousand species of sharks and rays in the world, and nearly a quarter of them are threatened with extinction, according to a new study. That means these ancient types of fish are among the most endangered animals in the world.

This word comes from a Swiss-based group called the International Union for the Conservation of Nature (IUCN), which maintains the so-called Red List of species threatened with extinction.

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Science
5:14 pm
Tue January 21, 2014

After Hibernation, Rosetta Seeks Its Stone

Originally published on Wed January 22, 2014 1:58 pm

Transcript

ROBERT SIEGEL, HOST:

The European Space Agency's Rosetta mission is back in business. For the past 31 months, the spacecraft has effectively been asleep. Most of its instruments were shut off to save energy, including the radio for communicating with Earth. Mission managers can now start preparing Rosetta for a rendezvous with a comet later this year. NPR's Joe Palca has more.

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The Salt
2:51 pm
Tue January 21, 2014

Whole Foods Bans Produce Grown With Sludge. But Who Wins?

A woman shops in the produce section at Whole Foods in New York City. The company recently announced it would prohibit produce farmed using biosolids in its stores.
Stephen Chernin/Getty Images

Originally published on Tue January 21, 2014 5:55 pm

If you've ever shopped at Whole Foods, you've probably noticed that some of the foods it sells claim all kinds of health and environmental virtues. From its lengthy list of unacceptable ingredients for food to its strict rules for how seafood is caught and meat is raised, the company sets a pretty high bar for what is permitted on its coveted shelves.

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Krulwich Wonders...
9:14 am
Tue January 21, 2014

Treat Yourself To A 'Huh?'

Robert Krulwich NPR

You drop a ball. You drop a key. You drop a piece of lead. They each slip from your hand and tumble to the ground. But you have an orderly mind (you're a physicist) and, to you, falling things don't seem haphazard — they seem neat. The unruly world has rules, laws. So instead of saying "Bummer!" you say, "Of course! How beautiful! How logical!"

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Space
4:15 am
Tue January 21, 2014

Rosetta On Course To Achieve Historic Mission

Originally published on Tue January 21, 2014 2:18 pm

Transcript

STEVE INSKEEP, HOST:

Scientists are celebrating after receiving a signal from a spacecraft on a very long journey. The Rosetta is traveling through the heavens to study a comet in more detail than ever before. As NPR's Rob Stein reports, the Rosetta spacecraft's call home meant the robot onboard had successfully awakened itself from a long hibernation, and is now on course to achieve its historic mission.

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