Only 55% of food-crop calories are consumed directly by humans. The rest: fuel and feed. http://boingboing.net/2014/12/16/only-55-of-food-crop-calories.html …pic.twitter.com/zPHoVGBcUT
12:04 PM - 17 Dec 2014
0 replies
14 retweets
4 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.