President John F. Kennedy enjoys a moment of levity at this Rose Garden ceremony marking Columbus Day, 1963. AP hide caption

Former Iranian President Mahmoud Ahmadinejad inspects the Natanz nuclear plant in central Iran on March 8, 2007. The tall cylinders are centrifuges for enriching uranium. EPA/Landov hide caption

A very old squished mosquito found in fossilized rock from Montana. Analysis of the insect's gut revealed telltale chemicals found in blood. PNAS hide caption

Bill Baker returned to Alcatraz for the first time since he was an inmate there more than 50 years ago. Laura Sullivan/NPR hide caption

A herd of 34 bison, pure of any cattle genes, have been introduced from Yellowstone National Park to the Fort Belknap Indian Reservation in northern Montana. Dan Boyce/Montana Public Radio hide caption

Crews are scrambling to clean up toxic contamination in Lac-Mégantic, Quebec, and many locals have been forced out of their homes and businesses for at least a year. Brian Mann/NCPR hide caption

Alyson Illich used technologies that tracked her son Colter's location while he was driving. "I think it made him more thoughtful," she said. Family photo hide caption