Measles - one of the world's most contagious diseases - is forging a path through the unvaccinated in the U.S., reaching its highest infection rate since 1996.
Researchers note that being poor in childhood might lead to greater irregularities in facial symmetry many decades later based on studies on elderly faces.
A deadly strain of the "bird flu" virus is currently spreading in Asia, with a focus in Cambodia, where all eight people infected so far this year have died.
Dr. Emily Willingham came to EarthSky from The Biology Files. Her background includes a PhD in biological sciences, a bachelor's degree in English, and a published book: The Complete Idiot's Guide to College Biology. She is a scientist, writer, editor, teacher, autism & ADHD parent, and "all around opinionator." Says Emily: "Got an English BA & biology PhD, & I'm not afraid to use them, often together."