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. He is currently focused on the eponymous series, "Joe's Big Idea." Stories in the series explore the minds and motivations of scientists and inventors.

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 forScience 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.

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3:22am

Mon August 5, 2013
Space

A Year On Mars: What's Curiosity Been Up To?

Originally published on Mon August 5, 2013 10:55 am

This self-portrait of NASA's Mars rover Curiosity combines dozens of exposures taken by the rover's Mars Hand Lens Imager during the 177th Martian day, or sol, of Curiosity's work on Mars, plus three exposures taken during Sol 270 to update the appearance of part of the ground beside the rover.
NASA/JPL-Caltech/MSSS

Imagine winning the World Series, the lottery and a Nobel Prize all in one day. That's pretty much how scientists and engineers in mission control at NASA's Jet Propulsion Laboratory in Pasadena, Calif., felt one year ago when the 1 ton, six-wheeled rover named Curiosity landed safely on Mars.

Within minutes, the rover began sending pictures back to Earth. In the past year it has sent back a mountain of data and pictures that scientists are sorting through, trying to get a better understanding of the early climate on Mars.

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5:43pm

Thu July 25, 2013
Science

If You Want A Doughnut Hole, Don't Ask A Mathematician

Originally published on Tue August 27, 2013 11:27 am

Transcript

ROBERT SIEGEL, HOST:

From NPR News, this is ALL THINGS CONSIDERED. I'm Robert Siegel.

A program such as ours is timed to the exact second, and occasionally, there are small holes when our mix of news and features doesn't quite fill up our two-hour slot.

So NPR's Joe Palca offered to come to our rescue with some short math and sciencey hole-filling stories, stories about what else - holes.

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3:01am

Wed July 17, 2013
Joe's Big Idea

All Charged Up: Engineers Create A Battery Made Of Wood

Originally published on Wed July 17, 2013 5:08 am

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

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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4:45am

Mon June 24, 2013
Joe's Big Idea

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

Originally published on Mon June 24, 2013 11:55 am

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

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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8:35am

Sat June 8, 2013
The Salt

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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5:17pm

Mon May 27, 2013
The Two-Way

Beneath A Glacier's White, Researchers See Green

Originally published on Wed May 29, 2013 8:52 am

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

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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6:03pm

Thu May 23, 2013
Shots - Health News

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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2:46pm

Fri May 10, 2013
Environment

Atop A Hawaiian Mountain, A Constant Sniff For Carbon Dioxide

Originally published on Tue May 14, 2013 1:22 pm

Researchers use the 120-foot tower atop Mauna Loa in Hawaii to collect air samples and measure the amount of carbon dioxide in the atmosphere. Mauna Kea looms in the distance.
Forrest M. Mims III forrestmims.org

Climate scientists have a good reason to want to get away from it all. To get an accurate picture of the amount of carbon dioxide in the Earth's atmosphere, you have to find places where the numbers won't be distorted by cities or factories or even lots of vegetation that can have a major local impact on CO2 concentrations.

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12:04pm

Tue May 7, 2013
The Salt

Wake Up And Smell The Tuna? Sunrise At Honolulu's Fish Auction

Originally published on Wed May 8, 2013 9:48 am

Among the 50,000 pounds of fish at the Honolulu auction last Friday was this opah, or moonfish, Lampris regius.
Joe Palca NPR

If you are up at 5 in the morning in Honolulu and are wondering what to do, I have a suggestion: Head over to Pier 38 and watch the Honolulu Fish Auction. It's quite a scene.

Getting up at 5 may seem a bit extreme, but for recent arrivals to Hawaii from the East Coast of the mainland — as I was last Friday — the six-hour time difference makes waking up early easy, if not inevitable.

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2:59am

Tue May 7, 2013
Joe's Big Idea

Envisioning The Future With Cori Lathan

Originally published on Tue May 7, 2013 11:04 am

AnthroTronix Founder and CEO Corinna Lathan, at the company's offices in Silver Spring, Md.
Courtesy of AnthroTronix, Inc.

Computers were created to be useful tools, but all too often it's still a chore to get technology to do our bidding.

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