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Scientists built a giant petri dish to see how bacteria become increasingly resistant to antibiotics.

Labor day is usually a time of leisure, carefree barbecues and lounging by the pool. But a Louisville, Kentucky, teenager spent the holiday feeding the homeless, and one small act of his that day is inspiring people around the world.

Hillary Clinton unleashed a torrent of attacks against Donald Trump's preparedness to be commander-in-chief Thursday morning, hours after an NBC forum exposed her opponent to criticism on multiple fronts.

One side of the bedroom is an explosion of pink, from the hair accessories and dangling trinkets to the stuffed animals and laundry hamper. The other, starting with the fuzzy pillows and puffy comforter, is an ode to purple.

The pictures from Brazil are heartbreaking: baby after baby born with a small head and damaged brain after an attack by the Zika virus during pregnancy. The official numbers are equally disturbing: The rate of birth defects involving the nervous system nearly doubled across Brazil after Zika arrived.

Twitter has a memo for NBC News: Don't send Matt Lauer to do a political journalist's job.

We believe what we see ... so how do unseen ideas become believable?

Walking around the old town of Vilnius, capital of Lithuania, you cannot miss a plaque on a historic building. It reads, "Anyone who would choose Lithuania as an enemy has also made an enemy of the United States of America."

French President Francois Hollande called for the creation of "an Islam of France" and the removal of foreign-trained extremist imams in a key speech Thursday on the challenges radical Islam poses to democracy.

In the cruel and unforgiving foreign policy world of migraine headaches the next President is almost certain to inherit, which candidate would be better equipped to lead the nation?

As her kidnapper drove toward Washington state, Montana resident Rita Maze called her husband from the trunk of her car, where she was locked by her captor, authorities say.

All of the drama connected with his breakup from Taylor Swift is not what Calvin Harris came for.

An overlooked corner of West Texas is believed to contain billions of barrels of newly-discovered shale oil.

Democratic nominee Hillary Clinton told reporters that there is evidence that ISIS wants Donald Trump to win the US election.

A continuing outbreak of foodborne hepatitis A linked to frozen strawberries has sickened 89 people in seven states, the Centers for Disease Control and Prevention said Thursday. No deaths have been reported, though 39 patients have been hospitalized.

Football players gave roses to Ashley Adamietz. The senior cheerleader at Foothill High School was diagnosed with chronic myeloid leukemia in August.

If you're an older man in a relationship and you have sex once a week or more, you may be twice as likely to have a heart attack, stroke or other cardiovascular event than a less sexually active man, according to a study released this week in the Journal of Health and Social Behavior. Especially if you enjoy it.

Former Secretary of State Colin Powell told his successor, Hillary Clinton, that he used his own personal computer to communicate with friends and foreign leaders and sent emails without going through the State Department server, according to emails released Wednesday by congressional Democrats.

An ancient Maya document, long dismissed as a fake, is not only the real thing, but it's the oldest-known book in the Americas.