When you drizzle honey onto toast, you probably picture a clean product that came straight from a flower. The reality is a little stranger. A honeybee is basically a flying dust mop, and some of the dust it collects is plastic. Over a single season, a colony quietly records the plastic pollution drifting through its neighborhood — and a surprising amount of that record ends up in the jar.

Bees Are Accidental Air Samplers

Bees are covered in branched hairs that evolved to grab pollen. In flight, those hairs pick up a static charge, so they attract tiny particles the way a rubbed balloon attracts your hair. As National Geographic’s reporting on the topic describes, pollen, plant debris, wax, and even bits of other bees get caught this way. Airborne microplastics — plastic fragments and fibers smaller than 5 mm — get caught too.