Science

NPR Story
10:22 am
Fri February 22, 2013

Russia Meteor Renews Focus on Asteroid Threats

Originally published on Fri February 22, 2013 12:03 pm

A week after a meteor exploded over Russia on the same day that an asteroid swung closely past Earth, experts discuss how the potential threats posed by near-Earth objects should be addressed. Astronomers Donald Yeomans and John Tonry weigh in on how to keep the planet safe.

NPR Story
10:22 am
Fri February 22, 2013

Ask A Dentist: Facts To Sink Your Teeth Into

Originally published on Fri February 22, 2013 12:03 pm

An apple a day keeps the doctor away. And, it turns out, the dentist--because that fibery skin is good for your teeth. Dentists Mark Ryder of the University of California San Francisco and Mark Wolff of New York University answer your toothy questions in this episode of our "Ask an expert" series.

The Salt
9:22 am
Fri February 22, 2013

For Fruit Flies, Alcohol Really Is Mommy's Little Helper

Alcohol: a key babyproofing product for this little mother.
Illustration by Daniel M.N. Turner Photos via istockphoto.com

Originally published on Mon February 25, 2013 11:26 am

Many a mom has reached for a glass of wine after a long day of tending children. But only fruit fly moms use their version of Chardonnay to guard their babies from harm.

When fly moms see marauding wasps, they seek out the alcohol in fermenting fruit, and lay their eggs there, according to new research. The alcohol is toxic to the wasps, but not to the fruit flies. They've evolved a tolerance for hooch.

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Animals
2:27 am
Fri February 22, 2013

Honey, It's Electric: Bees Sense Charge On Flowers

Adam Cole NPR

Originally published on Fri February 22, 2013 6:47 am

Flowers are nature's ad men. They'll do anything to attract the attention of the pollinators that help them reproduce. That means spending precious energy on bright pigments, enticing fragrances and dazzling patterns.

Now, scientists have found another element that contributes to flowers' brand: their distinct electric field.

Anne Leonard, who studies bees at the University of Nevada, says our understanding of pollinator-flower communication has been expanding for decades.

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Shots - Health News
4:04 pm
Thu February 21, 2013

Morning-After Pills Don't Cause Abortion, Studies Say

Plan B is one of two emergency contraceptives available in the U.S.
UPI/Landov

Originally published on Fri February 22, 2013 3:51 pm

The most heated part of the fight between the Obama administration and religious groups over new rules that require most health plans to cover contraception actually has nothing to do with birth control. It has to do with abortion.

Specifically, do emergency contraceptives interfere with a fertilized egg and cause what some consider to be abortion?

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