Victoria Ruiz (left), a postdoctoral fellow in immunology, works with Brianna Delgado, a high school student that she mentors, at the Blaser Lab, inside NYU's Langone Medical Center in New York, NY.
Ramsay de Give for NPR
Tom Murphy, 56, in his home in Gainesville, Va., was diagnosed with ALS four years ago. An experimental drug seems to have slowed the progression of his disease, he says, though most ALS patients aren't as lucky.
T.J. Kirkpatrick for NPR
A woman receives a dose of a newly developed Ebola vaccine at the NIH Clinical Center in Bethesda, Md., last week, in a photo from the National Institute of Allergy and Infectious Diseases.
Solar sponge: The top layer of graphite soaks up the sun's energy in tiny holes. When drops of liquid fill the holes, the water quickly evaporates. (The beaker looks hot, but the water below the sponge is cool as a cucumber.)
Courtesy of George Ni/MIT
Air traffic connections from West Africa to the rest of the world: While Guinea, Liberia and Sierra Leone don't have many flights outside the region, Nigeria is well-connected to Europe and the U.S.
PLOS Currents: Outbreaks