Air pollution cancer breakthrough will rewrite the rules

 https://www.bbc.com/news/health-62797777

Researchers say they have cracked how air pollution leads to cancer, in a discovery that completely transforms our understanding of how tumours arise.

The team at the Francis Crick Institute in London showed that rather than causing damage, air pollution was waking up old damaged cells.

One of the world's leading experts, Prof Charles Swanton, said the breakthrough marked a "new era".

And it may now be possible to develop drugs that stop cancers forming.