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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 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.

Astronomers are offering the general public a once-in-a-lifetime opportunity: the chance to discover a new planet in our solar system.

Many astronomers now think there may be a massive, undiscovered planet lurking in the far reaches of our solar system. Right now, however, the existence of this planet is theoretical. So the hunt is on to actually capture an image of it.

It's easy to feel overwhelmed by the size of the refugee problem confronting the world today. According to the U.N. Refugee Agency, more than 30,000 people are forced to flee their homes every day because of conflict or persecution.

But one energetic university professor in Germany decided that bemoaning and hand-wringing wasn't solving anything, so she decided to take action.

The scientific community has been roiled by the Trump travel ban.

Like tens of thousands of residents of the seven Muslim-majority countries, scientists have been stranded — cut off from their labs, worried they won't be able to attend upcoming conferences. And even though the ban has been temporarily reversed by a court order, they are uncertain about what the future holds — and the implications for their work.

Consider the case of Ph.D. candidate Hanan Isweiri. She left her lab at Colorado State University to fly home to Libya after the death of her father.

Imagine being able to collect the DNA of a human ancestor who's been dead for tens of thousands of years from the dirt on the floor of a cave. Sounds fantastic, but scientists in Germany think they may be able to do just that. If they're successful, it could open a new door into understanding the extinct relatives of humans.

Two researchers in Germany are trying to determine the best way to teach the German language to nonnative speakers, and at the same time make life a little easier for the wave of Syrian refugees arriving in their city.

Thousands of those refugees have landed in Leipzig, a city of about half a million, in what used to be East Germany. Some of the newcomers have had a difficult time; there have been news reports of racist animosity and violence against them.

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