In a California beekeeping program, a colony of 12,000 bees offers lessons in observation, safety and care.

Hives aren’t just linked to insect bites. They can be triggered by food, medication, temperature changes, illness or stress.

There are between 115,000 and 125,000 beekeepers in the U.S. during any given year. According to the National Honey Board, most of these keep less than 25 hives as a hobby. Commercial beekeepers ...

Urban beekeeping is increasing fast, but too many honeybee hives can reduce food, spread disease, and harm wild bees.