An introduction to nuclear fusion energy and an exploration of the technologies being researched in 1976.<p>Interestingly, they raise the possibility of a global warming doomsday scenario from waste heat due to massive global energy usage. At first I thought this was comical as I'd never thought of waste heat as being any sort of a contributor to global warming, but apparently it contributes to about 1% of greenhouse warming: <a href="https://skepticalscience.com/Waste-heat-vs-greenhouse-warming.html" rel="nofollow">https://skepticalscience.com/Waste-heat-vs-greenhouse-warmin...</a>