Rainwater everywhere on Earth is unsafe to drink, study finds
Rainwater almost everywhere on Earth has persistent chemicals, according to a new study.
Per- and poly-fluoroalkyl substances (PFAS) are a large family of man-made chemicals that do not occur in nature. They are known as persistent chemicals because they do not break down in the environment.
But now researchers at Stockholm University have found them in rainwater in most places on the planet - including Antarctica.
The health risks of exposure to these substances have been extensively researched. Scientists say they may be linked to fertility problems, increased cancer risk and developmental delays in children.
But others say no cause and effect can be proven between these chemicals and poor health.
Despite this, and as a result of this new research, some are calling for stronger restrictions on PFAS.