Scientists caution against drinking rainwater.

The amount of "forever chemicals" in rainwater exceeds the strictest guidelines established by environmental and health organisations. The study's authors, who began work on it in 2010, claim that they only examined four of the thousands of fluorine-based compounds and issue a warning that the long-term effects of exposure are still unclear.

Microplastics are impossible to avoid. From the centre of the Amazon forest to ....