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Leonard Wood was a U.S. general and doctor who and a very close friend of Theodore Roosevelt. He was a Republican presidential candidate in 1920 and was thought to be a shoo-in, but lost the nomination to Warren Harding. Newt Gingrich says his rival Mitt Romney is the weakest front-runner since Wood.

Shavings of metal can flake off of the artificial joints and cause serious pain and medical problems in the hip. About a half-million Americans have this type of implant, and though most patients won't have a problem, one doctor called the failure rate "unacceptably high."

When the Supreme Court hears arguments over President Obama's health care law next week, one item on the table will be a program that has been in place for nearly 50 years: Medicaid. The program is already a sore issue in Florida, which is one of the states fighting the health care law.

Staff Sgt. Robert Bales, the alleged shooter in last week's attacks on Afghan civilians, has been transferred to a military prison at Fort Leavenworth, Kansas. A complicated picture of his life — in the Army and back home near Tacoma, Wash. — is still emerging.

The Sweet Sixteen is set in the NCAA men's basketball tournament, and there are few surprises: All but two teams are from power conferences.

The squeeze on the Iranian economy due to international sanctions is turning into a stranglehold. The latest sign of Iran's economic trouble is a new drop in the country's oil output. And last week brought a new punishment: Iranian banks were barred from participating in a key international clearinghouse. Iran will have a harder time importing food, apparel, electronics and other foreign goods, which could heighten consumer discontent. U.S. officials hope that Iranian government anxiety about its popular support will prompt a rethinking of its nuclear program.

Manning, one of the greatest quarterbacks in NFL history, has reportedly chosen Denver as the place he wants to play. Negotiations on a contract are underway, sources tell multiple news outlets.

Meth-exposed children are more anxious and depressed at age 3, a new study found. And they tended to be more disruptive at age 5. But researchers say those problems are manageable if children and parents get help early on.

According to a U.S. product database, 110 meat substitute products were introduced in 2010 and 2011. All those new products are giving people who are looking for tasty alternatives to meat a lot more choice.

House Budget Committee Chairman Paul Ryan, who proposed a budget last year that was controversial because of radical changes it would have made to Medicare, is making another run at his target. This time he has a Democratic ally, Sen. Ron Wyden of Oregon. But progressive groups were already attacking the plan even before its official release Tuesday.