quote: But...now you've got to pump water out to the middle of the desert - where there already isn't enough water, and places like Phoenix and Las Vegas are quickly demonstrating the folly of trying to supply water to desert locales.
quote: and it has a positive energy ratio (output produces more energy than it took to produce it).
quote: Because GreenFuel’s algae farm is a closed system, overall water use is minimal and evaporation losses are limited.
quote: Even if you recycle 100% of waste water the dry air evaporates far more than you think.
quote: output produces more energy than it took to produce it