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.

Pages

Joe's Big Idea
2:38 pm
Thu September 5, 2013

Coronal Holes: The (Rarely Round) Gaps In The Sun's Atmosphere

NASA's Solar Dynamics Observatory captured this picture of the sun on June 18. The dark blue area in the upper left quadrant of the sun is a huge coronal hole more than 400,000 miles across. Coronal holes are areas of the sun's outermost atmospheric layer — the corona — where the magnetic field opens up and solar material quickly flows out.
NASA/SDO

Originally published on Tue September 10, 2013 4:21 pm

There's a hole in the sun's corona. But don't worry — that happens from time to time.

"A coronal hole is just a big, dark blotch that we see on the sun in our images," says Dean Pesnell, project scientist for NASA's Solar Dynamics Observatory. "We can only see them from space, because when we look at them [through] a regular telescope, they don't appear."

Read more
Shots - Health News
2:45 pm
Wed September 4, 2013

The Inside Story On The Fear Of Holes

Beautiful or creepy? A recent survey found that an image of a lotus seed head makes about 15 percent of people uncomfortable or even repulsed.
tanakawho Flickr.com

Originally published on Thu September 5, 2013 8:25 am

Trypophobia may be moving out of the urban dictionary and into the scientific literature.

A recent study in the peer-review journal Psychological Science takes a first crack at explaining why some people may suffer from a fear of holes.

Trypophobia may be hard to find in textbooks and diagnostic manuals, but a brief Web search will show that plenty of people appear to have it.

Read more
Space
2:22 am
Mon August 5, 2013

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

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

Originally published on Mon August 5, 2013 9:55 am

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.

Read more
Science
4:12 pm
Thu July 25, 2013

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

Originally published on Tue August 27, 2013 10:27 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.

Read more
Joe's Big Idea
2:01 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 4:08 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.

Read more

Pages