And in the US, corn burned for ethanol, which is 40% or so of it. Now plenty of that food value is passed on to animals, the largest byproduct is "distillers dried grains with solubles (DDGS)", which is 31% by weight of the original corn, so it's not entirely wasted on that boondoggle today, but
all of it could be redirected. Europe also has biofuels programs, doesn't it?
The title of your link: "U.S. could feed 800 million people with grain that livestock eat, Cornell ecologist advises animal scientists"
What, and give them type 2 diabetes?!?!!
Seriously, a lot of the usual suspects should reconsider their animus towards animal husbandry in the light of the increasing evidence the move to a low fat, high carbohydrate diet caused and is causing untold morbidity and mortality.