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Pop Quiz: 20 Percent Chance Of Rain. Do You Need An Umbrella?

What does a 20 percent chance of rain or snow actually mean? Interpreting probabilities in forecasts can be hard even for mathematicians and meteorologists — never mind the average person.
NPR

Thousands Of Migrating Birds Take Their Layover In A Texas Parking Lot

For one month every summer, hundreds of thousands of purple martins stop by an abandoned shopping mall parking lot in Austin, Texas, on their way to the Amazon Basin. Reporter Luke Quinton visited this year's roosting and offers a glimpse of the phenomenon.
NPR

Don't Pop That Bubble Wrap! Scientists Turn Trash Into Test Tubes

Researchers have stumbled on an ingenious idea: Use bubble wrap as a cheap test tube and petri dish. They've even run tests on blood that's sitting inside the poppable packaging. So how does it work?
NPR

What's Better Than A Total Eclipse Of The Sun? Check This

This may be the most heart-rending, most beautiful eclipse in our solar system. But you can't travel to see it. Not yet.
NPR

Son's Mental Illness Prompts Billionaire's Big Donation To Psychiatric Research

Ted Stanley is giving $650 million to the Broad Institute of MIT and Harvard to find and treat the genetic underpinnings of mental illnesses. His son has bipolar disorder.
NPR

Rosetta Spacecraft Readies For Rendezvous With Comet

The Rosetta spacecraft hibernated for 31 months while its orbit took it too far away from the sun for its solar arrays to keep it operational. It's ready for a rendezvous with a comet Aug. 6.
WAMU 88.5

Protecting Athletes: Concussions

Kojo explores steps professional and amateur sports organizations are taking, and not taking, to protect athletes from severe head injuries.

NPR

Sixth-Grader's Science Fair Finding Shocks Ecologists

Florida native Lauren Arrington discovered that invasive lionfish, which usually live in the ocean, could survive in nearly fresh water. The 12-year-old's experiment blew away professional scientists.
NPR

45 Years Ago, Armstrong Took His 'One Small Step'

On July 20, 1969, Apollo 11's Lunar Module, Eagle, touched down in the moon's Sea of Tranquility, marking humankind's first journey to another world.
NPR

Astronaut Who Walked On The Moon: 'It Was Science Fiction To Us'

Forty-five years after man first walked on the moon, Alan Bean, who was part of the second lunar landing, talks to NPR's Arun Rath about his stormy launch and how he translates space travel into art.

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