Exothermal used in a sentence

Exothermal in a sentence as an adjective

I'm not sure why this article is focusing on things like whether the reactor can fit on a truck, where you get deuterium, and how many coal power plants it can replace - instead of the actual question which is how they managed to produce a stable exothermal fusion reaction.

Impracticality of physical economic analysis aside, I'm now curious about the engineering problem of cooling down a planet overheating from sheer exothermal industry.