French physicist Philippe Hubert uses gamma rays to detect radioactivity in wine. "In the wine is the story of the Atomic Age," he says. C J Walker/Courtesy of William Koch hide caption

itoggle caption C J Walker/Courtesy of William Koch

Thomas Jefferson's garden at Monticello served as an experimental laboratory for garden vegetables from around the world. Leonard Phillips/Thomas Jefferson Foundation at Monticello hide caption

itoggle caption Leonard Phillips/Thomas Jefferson Foundation at Monticello