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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The Salt
12:58 pm
Thu October 11, 2012

100 Years Ago, Maillard Taught Us Why Our Food Tastes Better Cooked

A tower of profiteroles like this one, known as croquembouche, was created in France to celebrate Maillard, the man credited with identifying a key reaction in food science.
Gavin Tapp via Flickr

Originally published on Thu October 11, 2012 2:36 pm

A few hundred scientists gathered in the small French city of Nancy recently to present scientific papers related to a chemical reaction. Now that may seem a bit humdrum and hardly worth mentioning in The Salt, but in this case, it isn't.

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Shots - Health Blog
3:17 am
Wed October 10, 2012

Fun With Physics: How To Make Tiny Medicine Nanoballs

Álvaro Marín

Originally published on Thu October 11, 2012 9:20 am

For the past decade, scientists have been toying with the notion of encapsulating medicine in microscopic balls.

These so-called nanospheres could travel inside the body to hard-to-reach places, like the brain or the inside of a tumor. One problem researchers face is how to build these nanospheres, because you'd have to make them out of even smaller nanoparticles.

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Shots - Health Blog
2:22 pm
Tue September 25, 2012

Korean Eunuchs Lived Long And Prospered

A mural in an ancient tomb in China shows a troupe of eunuchs. How long did they live?
Wikimedia Commons

Tell people you're doing a story about the life spans of Korean eunuchs, the typical reaction is a giggle or a cringe.

But if you can overcome your visceral response to the topic, a study scientists in Korea did is quite interesting, both for what they found, and the way they found it.

Several scientists have shown that there is a link between longevity and reproduction: the greater the fertility, the shorter the life span. This has been fairly well established in nonhuman animal species, but proving it's the case for humans has been tricky.

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Shots - Health Blog
3:07 pm
Thu September 20, 2012

Could Genes For Stripes Help Kitty Fight Disease?

The genetic factors responsible for a cat's stripes might help researchers understand disease resistance in humans.
kennymatic via Flickr

Originally published on Thu September 20, 2012 6:04 pm

At this point it's just an interesting hypothesis, but it's possible that understanding cat coloration could help scientists understand resistance to infectious diseases.

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Shots - Health Blog
6:33 pm
Mon September 10, 2012

Vaccine For Dengue Fever Shows A Glimmer Of Hope

A health worker in the Domincan Republic sprays insecticide between houses to stop dengue fever outbreaks this month.
Erika Santelices AFP/Getty Images

It's human nature to hope for positive results after spending months or even years conducting a research study. In well-designed studies, however, scientists identify in advance the criteria for success, so their optimism won't color their conclusions when the study is completed.

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