Scientists have long focused on quantifying fear and other negative emotions in animals. Now they’re trying to measure positive feelings — and it’s a challenge.

A safari in Tanzania showed the author that her teenager is ready to leave the nest.

A mom recalls her first symptoms of colorectal cancer, which she mistook for hemorrhoids caused by her pregnancy at the time.

Drew Magary’s Thursday Afternoon NFL Dick Joke Jamboroo runs every Thursday at Defector during the NFL season. Got something ...