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A Food and Drug Administration advisory committee decides not to recommend approval of a new drug for children with attention deficit hyperactivity disorder. The committee was considering modafinil, a drug used to treat narcolepsy. This comes against a backdrop of increased safety concerns about drugs already used to treat ADHD.

Federal agents in Milford Township, Mich., a western Detroit suburb, are digging up a horse farm searching for any sign of the remains of former union leader Jimmy Hoffa. Hoffa disappeared in 1975. The farm is known as a place where organized-crime figures used to hang out.

Experts confirm that a cluster of trees found by a scientist hiking near Pine Mountain, Ga., are in fact American chestnut trees. But researchers say they have no idea how the trees escaped a blight in the early 1900s, which experts thought had wiped out the entire U.S. population of the trees.

Drugs to treat attention deficit and hyperactivity disorder prompt continued debate. An advisory committee to the Food and Drug Administration has recommended "black box" warnings for all, but a second panel, made up mostly of child psychiatrists and pediatricians, says the dangers do not merit such a warning.

The rescue of three Christian peace activists held hostage since last November comes as an enormous relief to their colleagues. Renee Montagne talks to Anita David, a member of Christian Peacemaker Teams in Baghdad.

The prosecution rests in the first phase of the Zacarias Moussaoui sentencing trial. Prosecutors, seeking the death penalty, needed to convince the jury that at least one person who died in the Sept. 11 terrorist attacks could have been saved if Moussaoui had told authorities about his involvement with al-Qaida's plans.

President Bush and Chinese President Hu Jintao hold talks on nuclear proliferation and energy policy as they work for closer U.S.-China ties. Outside the White House, activists protested human rights abuses by Hu's government. At east one managed to get inside to disrupt the day's ceremony.

The Centers for Disease Control and Prevention says Researchers have identified clusters of genes that appear to be linked to the tiredness and lack of energy associated with Chronic Fatigue Syndrome. The findings, announced by the Centers for Disease Control and Prevention, could lead to a better understanding of the condition.

China's President Hu Jintao visits with President Bush. The two presidents discussed a wide range of issues, but made no major announcements. Hu wraps up his trip to the U.S. with a visit to Yale University in Connecticut.

A cease-fire has been in place for years, but Armenian and Azerbaijani soldiers kill each other every week in the disputed region of Nagorno-Karabakh. The United States, Russia and France have been trying to negotiate a settlement.