When a child takes a 1 milligram dose of melatonin, the hormone quickly enters their bloodstream, signaling to the brain that it’s time for sleep. Melatonin reaches levels in the blood that can be ...

“These animals that are being displaced often venture into human-populated areas seeking shelter, as seen with the black bears occupying evacuated homes in Altadena and Pasadena,” said Skyler Nahouray ...