it takes 100 L (26 gal) of water to produce 1 kg of potatoes
it takes 4000 L (1057 gal) of water to produce 1 kg of rice
it takes 13,000 L (3434 gal) of water tor produce 1 kg of beef
According to the USGS, each US person uses about 300-380 L (80-100 gallons) of water a day!
We would have COUNTLESS more geniuses on this planet, solving urgent problems and inventing mind-bending evolutionary tools, if EVERYBODY would have access to excellent, lifelong, and free education! ;-).