Rep. Jeff Van Drew's decision to join the Republican ranks illustrates the challenging political calculus facing moderate Democrats who represent swing districts ahead of the impeachment vote.

Researchers are looking into a surprisingly simple technique that shows promise in easing certain kinds of chronic pain, including migraine headaches.

Suicide is the second-leading cause of death for teenagers. Schools increasingly are seen as key to keeping them safe, but suicide prevention training for school staff across the U.S. is hit or miss.