Not a Halloween prank: These bats are glowing and scientists have no clue why
Real bats across the U.S. are emitting an eerie green glow under ultraviolet light, a phenomenon confirmed in six species. This consistent biofluorescence across age, sex, and species suggests an inherited trait from a common ancestor, potentially a “leftover trick” from a time when it served a purpose, though its current function remains a mystery.
