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Hours after French troops launched a ground offensive in Mali to quash an Islamist rebellion, militants retaliated by seizing dozens of hostages, reportedly including Americans, in neighboring Algeria — an attack that underscores Western fears of a deteriorating security situation in northwestern Africa.

Flu viruses can tell time. Sort of. And the viral clock-watching could provide a new way to fight the flu.

A study in Cell Reports describes how researchers tapped into the flu's internal clock as they search for ways to keep the virus from spreading.

Nearly three years after a deadly mine explosion in West Virginia, a former Massey Energy mine superintendent has been sentenced to prison and federal regulators have toughened a regulation that could have helped prevent the disaster.

Pauline Phillips, known to millions of advice-seekers around the world as the original "Dear Abby," has died. She was 94.

The company that syndicates Dear Abby says on its website that she "died Wednesday ... in Minneapolis after a long battle with Alzheimer's disease."

Disgraced cyclist Lance Armstrong's confession to doping isn't just a matter of passing interest to sports fans, it has the potential to be pivotal new evidence in a raft of legal matters that have swirled around the cycling star for years.

Armstrong already has lost his battle with the U.S. Anti-Doping Agency, which detailed "the most sophisticated, professionalized and successful doping program" in sports when it announced a lifetime ban of the cyclist last October.