Why our wildlife's getting high on cocaine

The contraceptive pill is feminising fish and crabs are unwittingly swallowing anti-depressants.

And it’s thanks to unbelievable levels of untreated sewage being pumped into supposedly protected habitats, not to mention drugs like cocaine and MDMA.

So, why is it happening? And can the damage be undone?

ITV News Health and Science Correspondent Martin Stew tells Lucrezia Millarini what you need to know...