Most of Valerie Mansfield’s fifth-graders were afraid of bats when they came to Sierra House Elementary School Tuesday morning. But by afternoon, the students’ fears were replaced with knowledge.

It’s bat maternity season, when female bats give birth upside down and raise their offspring. And you know what? There’s a good chance a mom and her new baby – called a pup – are roosting in a tree ...

Massachusetts biologist Elise Stanmyer scrambled into the dark of an abandoned World War II military building. She whispered so she wouldn’t wake its winged residents. Her headlamp illuminated one ...