Kim’s son Zack was diagnosed with a glioblastoma multiforme. It is a brain tumour that is very rare in children and is usually seen in adults over 45.

Zack had chemotherapy treatments but doctors said there was no hope of him ever recovering. He died at just six years old.

Years later, social media and community chatter made Kim start to think that her son was not an isolated case. Perhaps he was part of a bigger picture growing in their community surrounding Coldwater Creek.

In this part of the US, cancer fears have prompted locals to accuse officials of not doing enough to support those who may have been exposed to radiation due to the development of the atomic bomb in the 1940s.

A compensation programme that was designed to pay out to some Americans who contracted diseases after exposure to radiation expired last year - before it could be extended to the St Louis area.

Here is a small summary, there is additional context in the article