National Geographic paleoartist John Gurche used fossils from a South African cave to reconstruct the face of Homo naledi, the newest addition to the genus Homo.
Photo by Mark Thiessen/National Geographic
A child suffering from dengue fever lies in a bed in the isolation ward of a Rawalpindi, Pakistan, hospital in November 2013. There is no treatment for dengue, whose symptoms include fever, severe joint pain, headaches and bleeding.
Delegates took their seats during the plenary session at the Bonn climate change conference on March 10, 2014. Negotiations resume this week; by the end of the year, the U.N. hopes to have forged a new global agreement.
Male and female tungara frogs. Among these frogs, the guy with the best call usually wins the gal — except when you throw a third-choice loser into the mix.
Alexander T. Baugh/Encyclopedia of Life
Ready, set, fly! The ball bearings glued to this bumblebee's legs simulate the weight and placement of pollen loads. The tag on the insect's back is a lightweight sensor, designed to track its movements in flight.
Courtesy of Andrew Mountcastle