Hunt for the hidden killer.

Dying from diseases like ALS and Alzheimer's is a tormenting process. The diseases are on the increase worldwide. Aided by climate change and pollution, scientists believe a substance in the environment, produced by some of the smallest organisms on Earth is the culprit.This is a medical detective story, a hunt for the hidden killer, following scientist Paul Cox and his team on a worldwide quest to find a cure. The team believe they have found something...