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A copper bedrail can kill germs on contact.

A Copper Bedrail Could Cut Back On Infections For Hospital Patients

Around the world, patients acquire new infections simply from spending time in a hospital. One way to fight back: replacing hospital bed rails with copper, a natural infection-killer.

Republican presidential candidates arrive Thursday for the final Republican presidential debate before the Iowa caucus in Des Moines, Iowa.

The Stream: Get Caught Up On The Iowa GOP Debate

There was still a big elephant not in the room ahead of tonight's Fox News Iowa Republican debate: Donald Trump.

Two Californians Among 3 Killed In Kyrgyzstan Plane Crash

Air Force Capt. Victoria A. Pinckney, 27, of Palmdale and Tech Sgt. Herman Mackey III, 30, of Bakersfield were killed along with Capt. Mark T. Voss, 27, of Colorado when their plane crashed in Kyrgyzstan on May 3.

Pat Leiggi (right) of the Museum of the Rockies prepares to move a leg bone of the T. rex at the Smithsonian's Natural History Museum in Washington, D.C., on Tuesday.

A T. Rex Treks To Washington For A Shot At Fame

The Smithsonian is set to unpack something it's never had before: a rare, nearly complete Tyrannosaurus rex skeleton. It's a gift from a Montana museum that says this T. rex deserves to be famous.

"[Death metal] is a very passionate music. It's also really dark and gory--and I like that stuff." - John Darnielle, of the Mountain Goats.

John Darnielle: Master Of Reality

"Death metal really does come from the heart," says The Mountain Goats frontman and author of Wolf In White Van. In Durham, he plays "The Best Ever Death Metal Band Out of Denton."

These historical photographs depict the forearms of human test subjects after being exposed to nitrogen mustard and lewisite agents in World War II experiments conducted at the Naval Research Laboratory in Washington, D.C.

Secret World War II Chemical Experiments Tested Troops By Race

While the Pentagon acknowledged years ago that it used American servicemen in World War II mustard gas experiments, NPR found new details about tests that grouped subjects by the color of their skin.

FCC Publishes Full Text Of Net Neutrality Rules

Two weeks after it voted to approve rules on net neutrality, the Federal Communications Commission releases what Chairman Tom Wheeler calls "a shining example of American democracy at work."

This 30-year-old millennial helped found — and now runs — Facebook. His net worth is estimated at more than $33 billion.

Why You Should Start Taking Millennials Seriously

There are more millennials in the U.S. than there are baby boomers. So why do they get so many eye rolls?

Rapper Dr. Dre is an executive at Apple, now.

Tech Week: C-E-Bros, Diversity Numbers And The Beats Deal

The Snapchat CEO's fraternity-day emails surfaced, Apple made its biggest acquisition and Google disclosed the uneven gender breakdown of its staff. Take a look at the week's top headlines in tech.

The Orion capsule is poised to make its first test flight Thursday. If all goes as planned, the unmanned vehicle will orbit the Earth twice before splashing into the Pacific.

NASA Prepares To Test New Spacecraft (That You've Likely Never Heard Of)

The new vehicle, named Orion, is designed to carry humans into deep space. But most Americans aren't aware it exists.

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