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

A U.S. Marine Osprey at Camp Leatherneck in southern Afghanistan. The aircraft suffered multiple problems when it was being developed, but is now getting praise from those flying it.

David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR