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.

There's a project in the neighborhood of Harlem in New York that has a through-the-looking-glass quality. An organization called City Health Works is trying to bring an African model of health care delivery to the United States. Usually it works the other way around.

If City Health Works' approach is successful, it could help change the way chronic diseases are managed in poverty-stricken communities, where people suffer disproportionately from HIV/AIDS, obesity and diabetes.

People who grow tomatoes want varieties that produce as much saleable crop as possible. People who eat tomatoes are less interested in yield, and more in taste. The tension between taste and yield can get pretty intense. What's a poor tomato plant to do?

There's now free software for your iPhone that lets you check for early signs of certain eye diseases.

The idea for the app comes from a Baylor University chemist named Bryan Shaw. We introduced you to Shaw late last year.

Whether they admit it or not, many (if not most) scientists secretly hope to get a call in October informing them they've won a Nobel Prize.

But I've talked to a lot of Nobel laureates, and they are unanimous on one point: None of them pursued a research topic with the intention of winning the prize.

A carnivorous plant has inspired an invention that may turn out to be a medical lifesaver.

Nepenthes, also known as tropical pitcher plants or monkey cups, produce a superslippery surface that causes unfortunate insects that climb into the plant to slide to their doom.

Scientists at Harvard's Wyss Institute for Biologically Inspired Engineering wondered if they could find a way to mimic that surface to solve a problem in medicine.

This Sunday night, we headed back to Mars: NASA's MAVEN spacecraft fired its six main engines, slowing down enough so it could be captured by the gravity of the red planet and go into orbit.

MAVEN, which stands for Mars Atmosphere and Volatile Evolution, is a distinctly un-sexy name for a project as cool as a sojourn to Mars. But whatever it's called, the probe is on a mission that should be of interest to everyone who likes living on Earth.

Some people dream of climbing Mount Everest or riding a bicycle across the country. Mike Davidson's dream has been to create the perfect toothbrush, and now he thinks he's done it.

The saga of this brush tells a lot about the passion and persistence to take an idea and turn it into a product.

Almost every time reporters go out on assignment, they run across something unexpected that they just can't fit into the story they're working on.

When science correspondent Joe Palca and producer Rebecca Davis were in Boston reporting on a boy with a rare form of cancer, they found themselves in the office of Jahrling Ocular Prosthetics, a business dedicated to making artificial eyes.

Every so often, a scientific paper just begs for a sexy headline.

Consider this study in the current issue of Science: "A Method for Building Self-folding Machines." A bit bland, you'll no doubt agree. A Real-Life, Origami-Inspired Transformer is how the journal's public affairs department referred to it. Now that's more like it.

Astronomers have a mystery on their hands. Two large radio telescopes, on opposite sides of the planet, have detected very brief, very powerful bursts of radio waves.

Right now, astronomers have no idea what's causing these bursts or where they're coming from. And nothing has been ruled out at the moment — not even the kind of outrageous claims you'd expect to see in tabloid headlines.

Australian Recordings Inspire Curiosity And Doubt

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Scientists and engineers at NASA are using origami techniques to help solve a fundamental dilemma facing spacecraft designers: How do you take a big object, pack it into a small container for rocket launch, and then unpack it again once it arrives in space — making sure nothing breaks in the process.

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Events unfold. Plots unfold. And this summer, NPR science correspondent Joe Palca has been telling us how science unfolds. It's series we're creatively calling Unfolding Science.

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Scientists from many areas of biology are flocking to a technique that allows them to work inside cells, making changes in specific genes far faster — and for far less money — than ever before.

There are smartphone apps for monitoring your diet, your drugs, even your heart. And now a Michigan psychiatrist is developing an app he hopes doctors will someday use to predict when a manic episode is imminent in patients with bipolar disorder.

People with the disorder alternate between crushing depression and wild manic episodes that come with the dangerous mix of uncontrollable energy and impaired judgment.

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From the studios of NPR West in Culver City, California it's ALL THINGS CONSIDERED. I'M Tess Vigeland. Let us contemplate the American teenage girl, perhaps the very first one. Apparently, there's been some scientific debate about who she is and whether she hails from the same gene sequence as what we think of as the first Americans, American Indians. And when I say gene sequence, we're not talking about Skinnies from Urban Outfitters. NPR's science correspondent Joe Palca has the story of a very old American teenage identity crisis.

When Bryan and Elizabeth Shaw learned that their son Noah had a potentially deadly eye cancer, like a lot of people, they turned to their religious faith to help sustain them. But faith is also impelling Bryan Shaw to create software to detect eye cancer in children as soon after birth as possible.

A scientist's ambitious plan to create an early detection system for eye cancer using people's home cameras is coming along.

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On the outskirts of Albuquerque, New Mexico, scientists are doing something astonishing. They're creating a white dwarf star - not a whole star but enough of one to study in minute detail. As part of his series, "Joe's Big Idea," NPR's Joe Palca introduces us to the astronomer behind this exotic project and explains why he's determined to learn all he can about this interesting stellar object.

Removing all the dangerous bacteria from drinking water would have enormous health benefits for people around the world.

The technologies exist for doing that, but there's a problem: cost.

Now a scientist at the Massachusetts Institute of Technology thinks he's on to a much less expensive way to clean up water.

There's only one thing better than having a good idea, and that's having a good idea that really works.

Earlier this year, I reported on some students at Rice University who had designed a low-cost medical device to help premature infants breathe.

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Scientists may have filled in a gap in one the fundamental theories of physics. We've always been told that magnets have two poles, north and south. But theory suggests there should be something called a magnetic monopole, a magnet that has either a north pole or a south pole but not both of them. So far no one has found this elusive magnetic monopole.

Good ideas don't only come from experts. An innovative engineering program in Texas has been proving that college undergraduates can tackle — and solve — vexing health challenges in developing countries.

Two engineers at Rice University in Houston are tapping the potential of bright young minds to change the world.

Big Problems, Simple Solutions

Three engineering undergrads at Rice University gave a teenager with a rare genetic disease something he'd always wished for: the ability to turn off the light in his room.

It may not seem like much, but for 17-year-old Dee Faught, it represents a new kind of independence.

Bryan Shaw never expected to write a research paper about a rare eye cancer.

After traveling for more than two years and some 1 billion miles, NASA's Juno mission to Jupiter is back where it started. Almost. At 3:21 p.m. ET Wednesday, the Juno space probe will be 347 miles away from Earth, just above the southern tip of Africa.

(As an aside, at around 11:30 a.m. ET, it was more than 90,000 miles away.)

Try to imagine someone who is supremely calm while at the same time bursting with energy, and you've got a pretty good idea of what Jim Olson is like.

He's a cancer researcher, physician, cyclist, kayaker and cook, not always in that order. He approaches each activity with incredible passion.

But to really understand Olson, you have to watch him in action with patients.

Perhaps one of the most uncomfortable things a doctor has to tell patients is that their medical problems are iatrogenic. What that means is they were caused by a doctor in the course of the treatment.

Sometime these iatrogenic injuries are accidental. But sometimes, because of the limits of medical technology, they can be inevitable. Now, a medical researcher in Seattle thinks he has a way to eliminate some of the inevitable ones.

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."

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