Science

A child poses for a picture in front of an astronaut space suit at the Kennedy Space Center on the eve of the launch of Space Shuttle Endeavour July 14, 2009 in Cape Canaveral, Fla.

To Infinity And Beyond: Would-Be Astronauts Keep Faith In Uncertain Era

4:58pm February 10, 2013

by NPR Staff

As NASA moves away from manned missions, the private sector is taking on the task. Those hoping for a ride are as eager as ever, and space exploration hasn't lost a bit of its luster.

Queue Listen Now

The team found one penguin chick that didn't make it.

Penguin Poop Leads Ice Researchers To Unknown Colony

8:55pm February 08, 2013

by NPR Staff

A team of researchers from the British Antarctic Survey stumbled upon some interesting satellite images in 2009: a trail of penguin poop that showed signs of a huge colony of emperor penguins. A team of researchers finally made it out to visit the 9,000-strong colony last December, marking the first human contact the animals had experienced.

Queue Listen Now

Science of Slumber: How Sleep Affects Your Memory

3:55pm February 08, 2013

We spend a lot of time sleeping (roughly one-third of our lives, according to the National Institutes of Health). But how much downtime do our brains really need? Experts discuss the links between sleep, memory and cognition, and why our sleep patterns change as we age.

Queue Listen Now

Science

Researchers Point To The Demise of the Dinosaurs

1:35pm February 08, 2013

The idea that a comet or asteroid impact led to the downfall of the dinosaurs has been around for years. Now, Paul Renne and colleagues report in Science that they've narrowed down the timing of that collision. It's practically simultaneous with dinosaur extinction.

Queue Listen Now

Scientists have confirmed that the impact of a giant asteroid and the mass extinction of the dinosaurs happened at the same time.

Science

Fresh Clues In Dinosaur Whodunit Point To Asteroid

7:53pm February 07, 2013

by Adam Cole

What killed the dinosaurs? It's history's ultimate murder mystery, and for decades the prime suspect has been a giant asteroid. New data suggest that it struck right before the extinction. But scientists say it still may not tell the full story of what happened to the dinosaurs.

Queue Listen Now

Blocking Iran With A Global Game Of Nuclear 'Keep Away'

7:27pm February 07, 2013

by NPR Staff

Obtaining the materials to make weapons-grade uranium or separated plutonium is harder than making a nuclear weapon, experts say. That's why the U.S. is engaged in a global effort to try to keep the specialized products out of hands it deems dangerous, like Iran.

Queue Listen Now

A worker makes a cut in the side of a sandstone block at the Cleveland Quarries facility in Vermilion, Ohio, earlier this month. The legal limit on the amount of silica that workers can inhale was set decades ago.

Silica Rule Changes Delayed While Workers Face Health Risks

3:07pm February 07, 2013

by Nell Greenfieldboyce

Regulations to restrict the amount of silica dust that workers can inhale were set decades ago, and workplace safety experts say that limit needs to be cut in half. A proposal for new rules was sent to the White House Office of Management and Budget for a 90-day review, but almost two years later, it's still under review.

Queue Listen Now

More than 400 guns, including these three, were turned in during a Dallas gun buyback program in January. But determining the effectiveness of such programs is difficult due to limits on gun-related research.

Debate Rages On Even As Research Ban On Gun Violence Ends

6:12pm February 06, 2013

by Julie Rovner

President Obama has ordered an end to a 16-year-old ban on federal funding of research on guns and health. But the political controversy that led to the ban in the first place is far from over.

Queue Listen Now

Trash, much of it believed to be debris from the 2011 Japanese tsunami, litters the beach on Montague Island, Alaska, on Jan. 26.

Tsunami Debris On Alaska's Shores Like 'Standing In Landfill'

10:51am February 06, 2013

by Annie Feidt

Wreckage believed to be from the 2011 Japanese tsunami is washing up thousands of miles away in Alaska. The debris isn't just unsightly — it poses environmental worries for the landscape and animals. One conservationist says the problem may be worse than the Exxon Valdez oil spill.

Queue Listen Now

Health researchers say the proportion of people in their late 40s to 60s with diabetes, hypertension or obesity has increased over the past two decades.

Aging Poorly: Another Act Of Baby Boomer Rebellion

10:40am February 06, 2013

by Rob Stein

Many of them have cut out smoking, and rates of heart attack and emphysema have declined. But baby boomers are burdened with diabetes, hypertension and many other chronic conditions. Researchers say too little exercise and a rise in obesity threaten baby boomers' golden years.

Queue Listen Now