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In this handout provided by National Aeronautics and Space Administration (NASA), The STS-134 astronauts from left, European Space Agency's Roberto Vittori, Gregory H. Johnson, pilot; Mark Kelly, commander; Michael Fincke, Greg Chamitoff, and Andrew Feustel, all mission specialists, pose for a group photograph shortly after landing onboard the space shuttle Endeavour at the Shuttle Landing Facility (SLF) at Kennedy Space Center, on June 01, 2011, in Cape Canaveral, Florida.

Next-To-Last Space Shuttle Flight Lands On Earth

Space shuttle Endeavour and its six astronauts returned to Earth on Wednesday, closing out the next-to-last mission in NASA's 30-year program with a safe middle-of-the-night landing.

On Hubble's Anniversary, A Look Up And A Look Back

For 20 years, the Hubble Space Telescope has been sending back stunning images of galaxies and nebulae to scientists on Earth. Hubble's discoveries have helped astronomers understand everything from how stars form in our own galaxy to the composition of the atmospheres of planets outside of our solar system.

CGI from "The Fabric Of The Cosmos: Quantum Leap" showing an entrance to Quantum Level.

NOVA: The Fabric Of The Cosmos: Quantum Leap

Airs Wednesday, July 25, 2012 at 9 p.m. on KPBS TV

Sexual Assault Rampant in Air Force, According to Exclusive Report

James Arness as Marshal Matt Dillon on "Gunsmoke"

PIONEERS OF TELEVISION: Westerns

Airs Friday, July 12, 2013 at 9 p.m. on KPBS TV

How has Culture and Art Influenced the Study of Anatomy?

How has religion and culture affected the way we view our bodies over time? When and why did the study of anatomy begin? How do different cultures around the world view the body differently? We speak to Professor Kevin Petti about his upcoming lecture on "Connecting Art and Science: The Historical Influence of Culture on Anatomy."

Texas Gov. Rick Perry answers questions following a speech at the Texas Homeland Security conference in San Antonio in 2006.

The Lone Star State Beginnings Of Rick Perry

When Gov. Rick Perry announces his candidacy on Saturday, there will be a new sheriff in the GOP presidential contest — a man who, in more than two decades of electoral politics, has never lost a race. Perry was born and raised in West Texas, where he picked up survival skills that could come in handy.

Many people infected with polio don't show any symptoms. Some become temporarily paralyzed; for others, it's permanent. In 1952, the polio epidemic reached a peak in the U.S.: almost 58,000 reported cases and more than 3,000 deaths.

Wiping Out Polio: How The U.S. Snuffed Out A Killer

During the early 20th century, polio killed thousands of American children each summer and paralyzed many more. Now, as the world fights to eradicate the virus globally, we look back at the development of the polio vaccine and its successful deployment around the world.

California's strawberry fields have become the latest battleground in a series of skirmishes over pesticide use. Growers say they need state regulators to approve the use of the fumigant methyl iodide as a replacement for methyl bromide, which damages the ozone layer.

Controversial Pesticide Worries Scientists

In California, scientists are battling with state regulators over the use of pesticides to grow strawberries. Methyl bromide, which is currently used to fumigate the soil the berries are planted in, is being phased out because it damages the ozone layer. Its replacement, however, is carcinogenic.

A hippo was born at the San Diego Zoo around 11 a.m. on Wednesday, Jan.26th.

San Diego Zoo Welcomes Baby Hippo

A big baby has been born at the San Diego Zoo.

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