Then again, it could be the 19% increase in caloric intake over the past
30 years...

http://www.public.iastate.edu/~rheto...e/rhecofp.html

The statistic is caloric *production*, not "intake". i.e., the world is
producing (via agriculture, etc.) 3,000+ calories per person per day. It is
not implying those calories are consumed at the same level they are
produced.

btw, there's a typo in that article, too: the table says "3810" but the
text says "3180".