The world's smallest vertebrate - animals that have a backbone - is a frog that could sit within the confines of your fingernail, a new study reports.
Scientists found the new species, which on average is just 7.7 millimeters long, in the southwestern Pacific island nation of Papua New Guinea.
"Dr. Anita Sengupta and Donn Liddle of NASA are pictured in the low speed wind tunnel at Texas A&M University, which is being used for testing of a scale model of the Orion spacecraft and its parachute system."
Source: NASA