...we have found yet. the majority of nuclear reactors are 40 plus years old because of the fear mongering. we can just continue to run these old reactors until they're done...and never explore any new nuclear technologies. The thorium reactor could solve all of the problems we have created with uranium burning reactors up until this point. They can be designed to where they are physically impossible to melt down, and they can be used to burn up all the nuclear waste we've created using uranium reactors.
Or we can stop nuclear power altogether and then figure out what we're going to do with all that waste.