Laser induced fusion of hydrogen and boron into helium:
"A nuclear reactor without chain reactions, radiation or radioactive waste? Marvel Fusion from Munich promise exactly that: lasers designed to heat hydrogen and boron so that they fuse into helium. A lot of energy is released during this fusion. But nothing else, no radiation worth mentioning, about the same amount as in a radiography practice, no radioactive waste; nor is there a potentially uncontrollable chain reaction. Fusion stops when the laser is switched off. Top researchers from all over the world are working on this project. Currently, Marvel Fusion are looking at possible sites for an experimental power plant costing around two billion euros."