I can't find how it helps prevent climate change in this paragraph Canadian company ‘General Fusion’ aims to be the first in the world to create a commercially viable nuclear-fusion-energy power plant. “Fusion produces zero greenhouse gas emissions, emitting only helium as exhaust. It also requires less land than other renewable technologies,” says the company. “Fusion energy is inherently safe, with zero possibility of a meltdown scenario and no long-lived waste.” ‘There is enough fusion fuel to power the planet for hundreds of millions of years.”