Stringy particles of Ebola virus (blue) bud from a chronically infected cell (yellow-green) in this colorized, scanning electron micrograph.
NIAID/Science Source
hide caption
Big questions have bedeviled virus hunters for 38 years: Why do people differ in their response to Ebola? Is it becoming more or less dangerous? There's now more evidence about who gets sick and why.
Stringy particles of Ebola virus (blue) bud from a chronically infected cell (yellow-green) in this colorized, scanning electron micrograph.
NIAID/Science Source
hide caption
Examples of what the iPhone app looks for: The white reflection from an otherwise dark pupil can indicate a tumor, a cataract or other eye problems.
Claire Eggers/NPR
hide caption
A farmer protesting falling prices dumps cauliflower in front of the prefecture building of Saint-Brieuc in northwestern France as police look on Sept. 24.
Fred Tanneau/AFP/Getty Images
hide caption
A new digital platform called Simpsons World features all 25 years of episodes. FX says it is trying to cater to both old-fashioned TV fans and people who watch shows on other devices.
FOX
hide caption
Dr. Curtis Chan, a dentist in Del Mar, Calif., loads up a truck with 5,456 pounds of candy to deliver to Operation Gratitude during the Halloween Candy Buyback on Nov. 8 last year. Chan personally collected 3,542 pounds of candy from patients.
Courtesy of Curtis Chan
hide caption
