Norman Borlaug, the father of the Green Revolution, passed away a few days ago at the age of 95. His improved agricultural production methods arguable saved hundreds of millions of lives — but the little Malthusian voice in my head keeps whispering that we’ll need a constant string of Borlaugs and a constrant string of Green Revolutions, or we’ll be saving millions only to see billions die of starvation at some point in the future.