Carl Greninger works in Microsoft IT Operations as a PM. He even has his own version of a Mr. Fusion, except his really works. Carl spent about a year along with a group of 13-17 year old students building his own nuclear reactor. Precisely, what they've built is called a "Farnsworth Fusor." Carl and his team are listed as being in "The Neutron Club", which means they have built an operating neutron producting fusion system, with two of the 13 year old members on his team being listed as "Youngest Fusioneer".
Carl talks to us about his Fusor, what drove him to build it, and what he hopes to accomplish with it.