Self-help guru Harville Hendrix and his wife Helen LaKelly Hunt are offering free relationship therapy workshops to Dallas-area couples. Many of the couples who attend have never gone to relationship counseling. Courtesy of Darren Rollinson hide caption

itoggle caption Courtesy of Darren Rollinson

In epilepsy, the normal behavior of brain neurons is disturbed. The drug valproic acid appears to help the brain replenish a key chemical, preventing seizures. David Mack/Science Source hide caption

itoggle caption David Mack/Science Source

"People are grappling with identity when they become parents, and they're also grappling with identity in terms of who we are online," says psychologist Daphne de Marneffe (not pictured). Jonathan Ross/iStockphoto hide caption

itoggle caption Jonathan Ross/iStockphoto

Rebecca Woolf takes a lot of photos of her children for her blog, Girl's Gone Child, but says she tries to not let the camera get in the middle of a moment. Courtesy of Rebecca Woolf hide caption

itoggle caption Courtesy of Rebecca Woolf

Red blood cells infected with the Plasmodium falciparum parasite. Plasmodium is the parasite that triggers malaria in people. Gary D. Gaugler/Science Source hide caption

itoggle caption Gary D. Gaugler/Science Source