That's cool, but nothing can "eat" CO2. Eating implies a gain of energy, but converting CO2 to whatever is going to be a loss of energy. Plants use CO2 to get c

That's cool, but nothing can "eat" CO2. Eating implies a gain of energy, but converting CO2 to whatever is going to be a loss of energy. Plants use CO2 to get carbon and store energy, but converting that CO2 still costs energy. Unless of course the fungi are performing nuclear fusion with the carbon and/or oxygen.