rationalskepticism.org

Earth could be reduced to a dense mass measuring just 330 feet across if particle accelerators set off a catastrophic chain of events, the astronomer royal has warned.

In his latest book, On The Future: Prospects for Humanity, Prof Lord Martin Rees, outlines the existential threats facing the planet, which include climate change, nuclear war and artificial intelligence.

https://www.telegraph.co.uk/science/201 ... periments/