Science

Shots - Health News
1:03 pm
Thu November 28, 2013

Brain Cells 'Geotag' Memories To Cache What Happened — And Where

Benjamin Arthur for NPR

Originally published on Mon December 2, 2013 5:13 am

Think back to an important event in your life: a graduation, a birth, a special Thanksgiving dinner. Chances are you're remembering not only what happened, but also where it happened. And now scientists think they know why.

As we form so-called episodic memories, the brain appears to be using special cells in the hippocampus to "geotag" each event, researchers report in Science. The process is similar to what some digital cameras do when they tag each picture with information about where the image was taken.

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Krulwich Wonders...
7:08 am
Thu November 28, 2013

On Thanksgiving, Everybody Needs A Friend — And That Means Everybody

Blue_Cutler iStockphoto

Last December, a website called The Morning News asked me to describe the most important and unimportant events of my year. So I sent them a story that felt like both to me, something slight but at the same time deeply rich. Now that it's Thanksgiving, I'm going to post it here because it's about two girls who want the best for everybody — and that can get complicated.

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World
3:45 am
Thu November 28, 2013

By Accident, Scientists Discover Lakes Beneath Greenland

Originally published on Thu November 28, 2013 4:34 am

Transcript

LINDA WERTHEIMER, HOST:

Flying to or from Europe, many a transatlantic traveler has gazed down at the brilliant white surface of Greenland and maybe wondered what is beneath those massive sheets of ice. Well, scientists have discovered jagged mountains, ravines that rival the Grand Canyon.

And now NPR's Richard Harris reports that for the first time they've come across some lakes under the ice as well.

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Shots - Health News
2:05 am
Thu November 28, 2013

'The Coolest Thing Ever': How A Robotic Arm Changed 4 Lives

Dee Faught tests a robotic arm installed on his wheelchair in September. Commercially produced robotic arms can cost tens of thousands of dollars, but three Rice engineering students built one for Dee for about $800.
Eric Kayne for NPR

Originally published on Mon December 2, 2013 11:30 am

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Shots - Health News
9:46 am
Wed November 27, 2013

Estrogen May Not Help Prevent Fuzzy Thinking After Menopause

Hormones clearly influence a women's health, but figuring out how is a tricky business.
Andrew Ostrovsky iStockphoto.com

Originally published on Wed November 27, 2013 10:16 am

There's a widely held belief that women experience moodiness and fuzzy thinking because of the drop in estrogen during menopause. And women have looked to hormone replacement therapy for relief.

But researchers increasingly think there's not much of a link between declining levels of estrogen during menopause and cognition.

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