Add one more item to the list of things people don't realize are bad for the environment. A new study citing researchers from seven different institutions is pointing fingers at the personal care industry and its products containing "microbeads." According to the study, the non-biodegradable beads, often used as exfoliants, are too small to be managed by sewage treatment facilities. Consequently, they end up in aquatic ecosystems where fish and wildlife ingest them with toxic consequences.

Legislation has been introduced to address the problem, but in the meantime, trillions of microbeads are piling up. The study estimates that 8 trillion beads - enough to cover the surface of 300 tennis courts - are added to the ecosystem every day. Grab a racket and click through to read more.