A little MRI video seems to settle the decades-old debate about that loud pop of the joints: It's all about bubbles. But imagine an air bag inflating, not the bursting of a balloon.
Researchers in Kenya uncover tools dated to 3.3 million years ago, long before the first humans, as we know them, walked the Earth.
Robyn Gritz investigated major national security threats, but says the FBI drummed her out of a job after she fell out of favor with her supervisors. She went on to sell cosmetics and answer phones.
Genetic profiling of cancer cells can help guide treatment, but such profiles can be ambiguous. Results would be more accurate if all labs tested normal cells from each patient, too.
A 47-year-old man disappeared 11 days ago on a popular trail. The weather is so bad that helicopters can't help. His only chance of survival is via a small search team with four dogs.
The State Department has released documents from 1865 that highlight the disbelief and and profound sympathy over Lincoln's death from governments and private citizens the world over.
A Capitol Police spokeswoman said one person has been detained. The identity of that person is unknown.
Citing a boom in natural gas as well as shifts in demand, the Energy Information Administration says the U.S. could stop being a net energy importer "sometime between 2020 and 2030."
The ship with 429 sailors and Marines sank Dec. 7, 1941, in the attack on Pearl Harbor; 388 remain unaccounted for. The Pentagon decision, citing scientific advances in DNA testing, marks a reversal.
The White House said Tuesday that President Obama would remove Cuba from the U.S. list of state sponsors of terrorism. Iran, Sudan and Syria are also on it. But some states have made it off, too.
Most children don't get diagnosed with autism until they start school, a study finds, though the signs may be visible much earlier. Earlier diagnosis means more time to get therapy.
The Common Core math standards say students need more than a textbook understanding of concepts like the Pythagorean Theorem. So two Colorado teachers teamed up for a lesson in real-world math.
The latest episode: sexual misconduct and security lapses by employees at the Drug Enforcement Administration and the Secret Service.
As South Korea marks the first anniversary of the accident that killed 304 people, the root causes of the sinking are still unclear, and parents of the victims are embroiled in a political tug-of-war.
In 2013, Aaron Hernandez was a three-year NFL veteran who was accused of killing the boyfriend of his fiancee's sister. A jury found him guilty of first-degree murder Wednesday.
Young adults covered by their parents' health plans may balk at getting treatment for mental health or other conditions they would rather not have show up on family insurance statements.
The little box is for presidential public financing. At first, it was relatively popular but now fewer people are checking the box and more candidates are rejecting the funds.
Saying that Google abused its dominant position in the search market "by systematically favoring its own comparison shopping product," a European panel releases a list of antitrust charges.
When Clemson University professor Chenjerai Kumanyika attended the funeral this weekend, he found himself discussing gentrification — and his own role in the changes in North Charleston, S.C.
A moment of silence will be observed at 2:49 ET, the time when the first of two devastating bombs went off in the crowds gathered to watch the marathon in 2013.