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Weekend Edition host Scott Simon talks with NPR's Tom Goldman about the week in sports, including the NHL lockout, the San Francisco Giants and Lance Armstrong's rough week.

Lynn University in Boca Raton, Fla., hosts the third and final presidential debate Monday. In the year since Lynn snagged the debate, its 2,000 students have watched a quiet campus turn into a hotbed of activity.

Tanzania has one of the largest elephant populations in the world. It also has one of the biggest poaching problems. An estimated 10,000 elephants a year are being slaughtered for their tusks, many of which are shipped to Asia.

In 1880, years before creating Sherlock Holmes, a young Arthur Conan Doyle went to the Arctic as the surgeon aboard a whaling ship. He recorded his adventures in journals full of notes and drawings, which have been published for the first time in a book called Dangerous Work.

Growing algae as a source of fuel could consume vast amounts of water and fertilizer, according to a study by the National Academy of Sciences. There's also a risk that the energy required to produce these fuels would make them impractical. These daunting technical problems need to be overcome if the nation wants to turn to algae fuels as a substitute for gasoline.

The five-term senator, a moderate Republican-turned-Democrat, was a key member of the Judiciary Committee and consistently a thorn for leaders of both political parties and their presidents. Specter died of complications from non-Hodgkins lymphoma at his home in Philadelphia on Sunday. He was 82.

Other takeaways from Tuesday's debate: President Obama gets tough while his GOP rival, Mitt Romney, gives no ground; voters are unhappy; candidates can't let go of the past; and the debate on foreign policy is truly teed up.

Oregon is one of several states making it easier for consumers to appeal long-term care insurance denials, and expedite payment of claims.

The move comes a week after the U.S. Anti-Doping Agency issued a damning report that puts Armstrong at the center of a sophisticated doping program.

Researchers say falls often happen when the elderly are not using a walker or wheelchair. Though 75 percent of patients in a recent study used one to get around, only 20 percent were using one when they fell.