National

Since the shooting at a Sikh temple in Oak Creek, Wis., on Sunday, there's been much discussion in the Sikh community as to how to better educate the public about their culture and religion. Audie Cornish speaks with Amardeep Singh, a professor of English at Lehigh University and a Sikh himself, about how much that would help in preventing the kind of violence in Wisconsin.

The American women's water polo team will again chase an elusive gold medal, this time at the London Olympics. The team qualified for the gold medal match by defeating longtime Olympic rival Australia.

Tied after regular time expired, the Americans scored two goals in overtime to beat the Australian water polo women, 11-9. Now the U.S. team moves on to the gold medal match Thursday.

(Revised and updated @ 5:55 pm ET)

Will the London 2012 Games be remembered as the last Olympics of the pre-clone era? The answer is maybe — because the group that oversees equestrian events has given its OK to allowing cloned horses to compete in the Summer Olympics.

The paleolithic diet has sparked plenty of discussion in the nutrition world (and on this web site) in the last few months. Lots of people are looking for advice on how to get in on this meat and vegetable-centric way of eating that claims inspiration from the simple wild foods a hunter-gatherer might have been lucky to find.

After the July 20 mass shooting at a movie theater in Aurora, Colo., there were calls to focus as much or more on the victims and their stories as on the gunman.

U.S. gymnast Aly Raisman has won the gold medal in the women's floor exercise at the London 2012 Games. Her powerful routine garnered a score of 15.600 — enough to beat the 15.200 of Romania's Catalina Ponor, who turned in a technically strong performance.

Russia's Aliya Mustafina took bronze, with 14.900. American Jordyn Wieber finished seventh, with a 14.500 score.

Concussions make up about 15 percent of all high school sports injuries, according to Children's Hospital Boston. But how can parents decide whether children should play sports, and how to keep them safe? Host Michel Martin talks with three "sports" moms, including a pediatrician who studies concussions in children.

Scientific evidence is mounting on the links between sports and concussions. Host Michel Martin explores what some are calling the "concussion crisis" for athletes. She speaks with Chris Nowinski, author and co-founder of the Sports Legacy Institute, a group focused on researching concussions in sports.