Joe Palca

Joe Palca is a science correspondent for NPR. Since joining NPR in 1992, Palca has covered a range of science topics — everything from biomedical research to astronomy. In addition to his science reporting, Palca occasionally fills in as guest host on Talk of the Nation Science Friday.

Palca began his journalism career in television in 1982, working as a health producer for the CBS affiliate in Washington, DC. In 1986, he left television for a seven-year stint as a print journalist, first as the Washington news editor for Nature, and then as a senior correspondent for Science Magazine.

In October 2009, Palca took a six-month leave from NPR to become science writer in residence at the Huntington Library and The Huntington Library, Art Collections, and Botanical Gardens.

Palca has won numerous awards, including the National Academies Communications Award, the Science-in-Society Award of the National Association of Science Writers, the American Chemical Society James T. Grady-James H. Stack Award for Interpreting Chemistry for the Public, the American Association for the Advancement of Science Journalism Prize, and the Victor Cohn Prize for Excellence in Medical Writing.

With Flora Lichtman, Palca is the co-author of Annoying: The Science of What Bugs Us (Wiley, 2011).

He comes to journalism from a science background, having received a Ph.D. in psychology from the University of California at Santa Cruz where he worked on human sleep physiology.

Palca lives in Washington, D.C, with his wife and two sons.

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Joe's Big Idea
1:01 am
Wed July 17, 2013

All Charged Up: Engineers Create A Battery Made Of Wood

Wood fibers are coated with carbon nanotubes and then packed into small disks of metal. The sodium ions moving around in the wood fibers create an electric current.
Heather Rousseau NPR

Originally published on Wed July 17, 2013 3:08 am

The big idea behind Joe's Big Idea is to report on interesting inventions and inventors. When I saw the headline "An Environmentally Friendly Battery Made From Wood," on a press release recently, I figured it fit the bill, so went to investigate.

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Joe's Big Idea
2:45 am
Mon June 24, 2013

For Sharpest Views, Scope The Sky With Quick-Change Mirrors

Before And After: These near-infrared images of Uranus show the planet as seen without adaptive optics (left) and with the technology turned on (right).
Courtesy of Heidi B. Hammel and Imke de Pater

Originally published on Mon June 24, 2013 9:55 am

It used to be that if astronomers wanted to get rid of the blurring effects of the atmosphere, they had to put their telescopes in space. But a technology called adaptive optics has changed all that.

Adaptive optics systems use computers to analyze the light coming from a star, and then compensate for changes wrought by the atmosphere, using mirrors that can change their shapes up to 1,000 times per second. The result: To anyone on Earth peering through the telescope, the star looks like the single point of light it really is.

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The Salt
6:35 am
Sat June 8, 2013

Asparagus Helps Lower Blood Pressure (At Least In Rats)

In a recent study, rats that munched on asparagus saw their blood pressure drop.
Muffet Flicker

Here's another reason to eat asparagus, in case you were looking for one.

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The Two-Way
3:17 pm
Mon May 27, 2013

Beneath A Glacier's White, Researchers See Green

The small patch in the middle of the image is Aulacomnium turgidum, a type of bryophyte plant. Researchers in the Canadian Arctic say they are surprised the bryophytes were still green, even after being covered by ice.
Courtesy of Caroline La Farge

Originally published on Wed May 29, 2013 6:52 am

In the news business, an evergreen is a story that doesn't have to run on a particular day, but can stay fresh for a long time.

This is an evergreen story about an evergreen. In particular, a group of plants called bryophytes. Turns out they may be evergreen quite a bit longer than most people thought.

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Shots - Health News
4:03 pm
Thu May 23, 2013

The Weight Of A Med Student's Subconscious Bias

More than a third of medical students in a North Carolina study had a bias against overweight people.
iStockphoto.com

Quite a few medical school students have something against obese people, and most of those who have such a bias are unaware of it.

That's the conclusion of study appearing in the July issue of Academic Medicine. It was conducted at the Wake Forest School of Medicine in Winston-Salem, N.C. The study's author says the subconscious judgments could affect how patients are treated.

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