When he was 59 years old, Greg O'Brien was diagnosed with early-onset Alzheimer's disease. Five years later, he is speaking publicly about his experience, even as his symptoms worsen. Courtesy of Greg O'Brien hide caption

itoggle caption Courtesy of Greg O'Brien

Former Arkansas Gov. Mike Huckabee was a Republican presidential hopeful in the 2008 election. He writes that he wants his book God, Guns, Grits, and Gravy to introduce Americans to life in "flyover country." Justin Sullivan/AFP/Getty Images hide caption

itoggle caption Justin Sullivan/AFP/Getty Images

One Saturday each month, the Pacific Science Center of Seattle opens early for people with autism spectrum disorders. John Keatley/Pacific Science Center hide caption

itoggle caption John Keatley/Pacific Science Center

The UASK app helps sexually assaulted college students in D.C. access a range of services, from rides to the hospital to phone numbers for counselors. The information is personalized to their school. Another version of the app, ASK, provides the same resources to non-students. Emily Jan/NPR hide caption

itoggle caption Emily Jan/NPR

The Akron Police Department training class works out at Kent State Basic Police Officer Training Academy. Donald Clayton is the only African-American in the class of 20. M.L. Schultze/WKSU hide caption

itoggle caption M.L. Schultze/WKSU

Allagash Brewing microbiologist and head of quality control Zach Bodah's favorite microscope picture of Brettanomyces (taken in house). The culture comes from Confluence Ale and is a blend of the Allagash house yeast and Brett yeast. Courtesy of Zach Bodah/Allagash hide caption

itoggle caption Courtesy of Zach Bodah/Allagash

TSA agents, like this one at Chicago's Midway International Airport, discovered more than 2,000 firearms at the nation's airports last year — the overwhelming majority of them loaded, according to new data. Nam Y. Huh/AP hide caption

itoggle caption Nam Y. Huh/AP