Health
Missing Foxes Fuel Lyme Disease Spread
Coyotes are overtaking the red fox, which feeds on small mammals such as mice, shrews and chipmunks, animals that, like deer, can play host to the Lyme-disease-carrying ticks
Stories by Jennifer Welsh
Health
Depression in Teens Could Be Diagnosed with Blood Test
A blood test based on 11 genetic markers could make early-onset diagnosis easier and possibly relieve the stigma of depression
Evolution
Apes' Simple Nests Are Feats of Engineering
Chimpanzee nest-building habits could provide clues to what drove humans from the trees
Mind & Brain
Aging Brains Match Youth in Some Mental Tasks
Older people slow down to avoid making errors, but there may not be a uniform decline in all cognitive processes
Mind & Brain
Why Laughter May Be the Best Pain Medicine
Laughter with friends releases endorphins, the brain's "feel-good" chemicals
Biology
Fatherhood Lowers Testosterone, Keeps Dads at Home
A new study finds that levels of testosterone, the "macho" sex hormone, drop in new fathers
