Greg O'Brien gathers his thoughts before a run in 2013. "Running is essential," he says. Michael Strong/Living With Alzheimers hide caption

itoggle caption Michael Strong/Living With Alzheimers

Student volunteers with The Campus Kitchens Project evaluate produce. The initiative gets high-school and college students to scavenge food from cafeterias, grocery stores and farmers' markets, cook it and deliver it to organizations serving low-income people in their communities. Courtesy of DC Central Kitchen hide caption

itoggle caption Courtesy of DC Central Kitchen

Physicians Nowiba Mugambi and Erica Palys discuss a patient's X-ray at the Moi Teaching and Referral Hospital in Eldoret, Kenya. The hospital plans to open a new cancer treatment center in April. Evelyn Hockstein/Courtesy of AMPATH hide caption

itoggle caption Evelyn Hockstein/Courtesy of AMPATH

A government-appointed panel concluded in a recent report that Americans should eat less red meat and processed meat. A more plant-focused diet is better for health and the environment, it found. Andrew Burton/Getty Images hide caption

itoggle caption Andrew Burton/Getty Images

Closing loopholes in background checks for gun purchases would reduce the risk of death and injury, doctors' and attorneys' groups say. Alexa Miller/Getty Images hide caption

itoggle caption Alexa Miller/Getty Images

Shopping for an MRI scan? Guroo.org, won't yet show you what your local hospital or radiologist charges, but it will reveal the average cost of the test in your area. iStockphoto hide caption

itoggle caption iStockphoto

An overgrowth of Clostridium difficile bacteria can inflame the colon with a life-threatening infection. Dr. David Phillips/Getty Images/Visuals Unlimited hide caption

itoggle caption Dr. David Phillips/Getty Images/Visuals Unlimited

To safely lift Bernard Valencia out of his hospital bed, Cheri Moore uses a ceiling lift and sling. The VA hospital in Loma Linda, Calif., has safe patient handling technology installed throughout its entire facility. Annie Tritt for NPR hide caption

itoggle caption Annie Tritt for NPR