The director of the National Park Service joins Kojo to talk about its stewardship mission and what lies ahead for the nation's natural treasures.

Miniaturizing technology is really hard — gears, rotors, belts and pistons that work perfectly at human size just don't work very well at the small scale. So researchers are turning to insects for ideas about how to make tiny flying robots and cameras — and driving a new generation of gadgets.

For years, salmon farming has gotten a bad rap from marine biologists, who say the fish grown in open-ocean net pens generate pollution, disease and parasites. But now, a few salmon farms have moved on land. From an environmental standpoint, some scientists say, that's "a huge step forward."

NASA is looking for three haikus to include on a DVD that will travel to Mars aboard a spacecraft this fall. And everyone who submits a poem will have their name included.

Corn and soybean farmers not only survived last year's epic drought — thanks to crop insurance, they made bigger profits than they would have in a normal year, a new analysis finds. And a big chunk of those profits were provided through taxpayer subsidies.

The winter of 1609-1610 has been called the "starving time" for the hundreds of men and women who settled the English colony of Jamestown, Va. They ate their horses, their pets — and, apparently, at least one person. Scientists say human bones recovered from the site provide the first hard evidence that the colonists may have resorted to cannibalism.

Kojo talks with Johns Hopkins pediatric virologist Dr. Deborah Persaud about her career and the research that led to the first "functional cure" of an HIV-infected baby.

Disruptions of sleep are well known as migraine triggers, but now researchers have found a genetic link between the two. In studying families with lots of migraines, they also found a mutation on a gene that helps control circadian rhythms.

Last year, the Fermi Gamma-ray Space Telescope experienced a dangerous close pass with a Cold War-era spy satellite.