Yeah, that is patently absurd. You don't arbitrarily whack 20+ years off of life expectancy because food prices went up 10-30% (which is what your article claims -- and leaves open the question of "what caused the rest of the price increases?") Especially since -- as already discussed --
the number of hungry people in the world DROPPED even as food prices rose.
And, as already discussed,
there is no correlation between biofuels production and food prices.
And, as already discussed,
there IS a correlation between oil prices and food prices.
And, as already discussed,
grain yields increased, even as the acreage dedicated to agriculture stayed flat, meaning there isn't a permanent crunch in the availability of grains.
And, as discussed previously,
the number of people in extreme poverty is falling. Meaning incomes are going up, and increasing faster than inflation, including food inflation.
Speaking of inflation: The rise in prices is a tad exaggerated, as we can see with the FAO's comparison of nominal and real food prices:
In fact,
as grains get cheaper, farmers have LESS INCENTIVE to grow those grains. Since you missed it,
corn is so cheap that American farmers don't want to grow it without subsidies. That's why the farmers keep pushing for ethanol mandates -- because it includes generous subsidies for those farmers.
Oddly enough, the article you linked is from 2008, when there was a big spike in prices -- which dropped the next year. So tell us, based on the information in the article, why did prices drop? After all, the use of crops for biofuel did not drop; it rose slightly. Something doesn't add up.
Last but not least:
Most environmentalists do not advocate using food crops for biofuels; they prefer biodiesels made out of non-food crops or food waste. This is, yet again, a big red herring. If you want to attack someone over biofuels, go after Republicans and American farmers who demand mandates and subsidies.