This kid assembled a bunch of radioactive materials and got arguably close to assembling a rudimentary breeder reactor.

All of this happened in a shed behind his mom's house, within a half mile of the house my wife lived in at the time. Wild.

It did not end well for him. He died young after struggling with mental illness and substance abuse.

https://www.geotraces.org/wp-content/uploads/2020/03/HarpersMagazine-1998-11-0059750-1.pdf