The Army identified the alleged gunman as Sgt. Quornelius Radford, who worked in automated logistics. The victims were Radford's coworkers and he used a personal handgun, the Army added.

Summer for thousands of people in Ann Arbor means scavenging for hidden codes around the city and reading books to collect points. It's been a triumph for the public library that runs it.

We speak with James Larkin, the head of a project in South Africa that's experimenting with using radiation to prevent rhino poaching. They sedate the animals and inject radiation into their horns.