being carbon negative. it pulls more c02 out of the environment than the electricity puts back in. but in order to feed the world, these algae farms would need to be placed around the globe. and not everywhere�*s on top of a volcano. the system itself is always carbon negative because we take in c02, we fix it in biomass and we breathe out oxygen. but if you're having to use electricity that's generated through coal... exactly. ..then the system is generating c02 as well... yes, yes. ..and can then you connect the pipe from the power station, straight back into the algae and suck it back in? that is actually a possibility. this is what we're doing right now. these guys, they need c02, so we could actually take whatever c02 into the system, theoretically. and in fact, vaxa is thinking even further ahead than improving the environment here on earth. growing food in small spaces