A STRAIGHT line is the shortest distance between two points. So light, which never travels farther than it must, moves in straight lines. On flat…
Watching the eyes of a person with ALS might help clinicians assess their brain function, according to a paper in the November 11 PLoS One.…
A turned-down mouth, sweaty palms, and eyes that drift up and to the side—if you believe conventional wisdom about lying, these are telltale signs. But…