Last June, a jaguar named “Sombra” wandered in front of an isolated wildlife camera in the Chiricahua Mountains. Detecting motion, the camera began recording an infrared video. Sombra stopped in...

There might be a parasite in your brain. It’s estimated that up to one-third of the world’s population is infected with the brain parasite Toxoplasma Gondii. The U.S. has a relatively...