'Tampon tests' could be used to track sewage in rivers

Trial using tampons and UV light successfully identified sewage pollution entering rivers from households

Glow-in-the-dark tampons could be used to show where sewage is seeping into rivers, scientists have suggested.

A study has found that tampons absorb even tiny amounts of "brighteners" found in detergents, toothpaste and shampoo and subsequently glow under UV light.