Prevent ocean acidification killing all plankton, leading to mass extinctions? Capture CO2 or carbonic acid, permanently? Molten Salt Reactors can provide the power.
MSRs can’t have loss of coolant accidents, can’t have high-pressure explosions, produce no CO2, use uranium or thorium as fuel, eliminate long-term nuclear waste, are cleaner & cost less than coal or oil.
Useful Liquid Fluoride Thorium Reactor Fission By-Products, incl. magnets for headphones and medical isotopes to cure cancer. Easy extract from LFTR, unlike from fuel rods.