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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 have found — way beyond the orbit of Pluto — an intriguing distant object orbiting the sun.

It's just a dwarf planet, about 200 miles across, but some researchers think finding it increases the likelihood that there is a heretofore undiscovered giant planet lurking in the outer reaches of our solar system. That would bring the number of true planets in our solar system back to nine, replacing Pluto which was demoted in 2006.

A scientist in Australia has come up with an insecticide-free way to control a particularly pesky species of mosquito.

The approach involves two things: deploying a decidedly low-tech mosquito trap called a GAT and getting to know your neighbors.

GAT stands for Gravid Aedes Trap. Aedes is short for Aedes albopictus, known colloquially as the Asian tiger mosquito, which bites aggressively night and day.

The explosion of deaths related to opioid misuse has underscored a pressing need for better ways of treating pain, especially chronic pain.

Duquesne University pharmacology associate professor Jelena Janjic thinks she's on to one. It involves using a patient's own immune system to deliver non-opioid pain medication to places in the body where there's pain.

Using lessons learned from harbor seals and artificial intelligence, engineers in California may be on to a new way to track enemy submarines.

The idea started with research published in 2001 on the seals.

Scientists at the University of Bonn in Germany showed that blindfolded seals could still track a robotic fish. The researchers concluded that the seals did this by detecting the strength and direction of the whirling vortex the robot created as it swam through the water.

An Italian team of scientists says it has strong evidence of a subsurface lake of liquid water on Mars. It's a discovery that adds to the speculation that there could once have been life on Mars — and raises the possibility that it might be there still today, since liquid water is an essential ingredient for life.

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