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Knee pain is common, but surgery isn't necessarily the answer, researchers say.

Common Knee Surgery May Help No More Than A Fake Operation

Surgery to repair a damaged knee meniscus is very common, but it may not help a lot of people, a study finds. That may be because some people benefit more than others, and doctors still don't know who is going to get the most out of surgery.

Ripening fruit in a grove in Plant City, Fla., this month. Florida citrus growers are worried about citrus greening, which causes bacteria to grow on the leaf and fruit, eventually killing the tree.

Time Is Running Out To Save Florida's Oranges

Scientists and growers are in a bitter fight against citrus greening, a disease that has devastated Florida's orange and grapefruit crops. They fear that unless scientists find a cure for greening soon, it's just a matter of time before economic realities and the disease force growers out of business.

Job seekers read pamphlets as they wait in line to enter a job fair in San Jose, Calif.

More Than 1 Million Americans Lose Unemployment Benefits

Beyond drastically curtailing a safety-net for jobless workers, allowing the benefits to expire sets up a major political fight for the coming new year.

In Virginia this summer, Arlington Public Schools transported students in poor neighborhoods to community libraries for group readings. Studies say children from low-income families may hear roughly 30 million fewer words by age 3 than their more affluent peers.

Closing The 'Word Gap' Between Rich And Poor

Children in low-income families hear dramatically fewer words, which often sets them back in school and later life. The gap was officially documented in the 1990s, but has persisted. Now an entire city is trying to close the divide.

An armed man waves his rifle as buildings and cars are engulfed in flames after being set on fire inside the U.S. Consulate compound in Benghazi late on Sept. 11.

GOP Leaders Reject Report That Benghazi Wasn't Linked To Al-Qaida

Republicans are casting doubt on a New York Times report that backs the Obama administration's version of events.

The Federal Aviation Administration's map showing the locations of the six "unmanned aircraft systems" test sites it has chosen.

Test Sites Chosen For Commercial Drone Testing

The locations are expected to produce jobs as companies try out ways to make money with "unmanned aircraft systems." The six sites stretch from Alaska south to Texas and then north to New York State.

Cuban immigrants are handed forms to fill out by an immigration and naturalization official in Miami on Dec. 3, 1984, so they can become permanent residents of the United States.

Poll Findings: On Cuban-Americans And The Elusive 'American Dream'

Among Latinos, no group may have achieved the American dream as fully as Cuban-Americans. Since arriving here, as a community, they've prospered. But our recent poll suggests that for many Cuban-Americans, the dream is becoming elusive.

A study found that a Mediterranean diet with extra nuts and olive oil was associated with a lower risk of a cardiovascular condition called peripheral artery disease.

More Signs A Mediterranean Diet Helps Prevent Cardiovascular Ills

A study found that people on the diet, which is rich in nuts and olive oil, had a lower risk of developing peripheral artery disease than people on a low-fat diet. The research helps build the case that a Mediterranean diet can help prevent a wide range of cardiovascular diseases.

A major supplier to bike-sharing companies declared for bankruptcy this week — but experts say they still see the services spreading. Here, a man rides a Citibike through the Dumbo district of Brooklyn.

Big Bike-Sharing Supplier's Bankruptcy Doesn't Doom U.S. Programs

The Public Bike System Company is the main supplier for bike-sharing systems around the country, from San Francisco to New York City, and it declared bankruptcy Monday. But experts say this isn't a big bump in the road — and in fact, bike-sharing is here to stay.

Dr. Scott Gottlieb and Megan McArdle face off against Jonathan Chait and Dr. Douglas Kamerow over the Affordable Care Act in a debate moderated by John Donvan in January.

Debate: Is The Affordable Care Act Beyond Repair?

Two teams of medical doctors and political columnists face off over the hot-button health care law in the latest Intelligence Squared debate. Is Obamacare fundamentally flawed or poised to transform the health care system for the better?

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