Various

Teenager Builds a Nuclear Reactor in His Backyard, Exposing Thousands to Radiation

Breeder reactors

As described earlier, breeder reactors are often criticized. That's why not many have been built. The breeder reactors that have been built have now all been decommissioned. Either they were closed because they proved too dangerous, or they had caused a nuclear meltdown. That sounds just as dangerous as it really is.