Norman Borlaug, 92, is the father of the “Green Revolution,” the dramatic improvement in agricultural productivity that swept the globe in the 1960s. He is now the subject of an admiring biography by Leon Hesser, a former State Department official who first met Mr. Borlaug 40 years ago in Pakistan, where they worked together to boost that country’s grain production. “The Man Who Fed the World” describes, in a workmanlike way, how a poor Iowa farm boy trained in forestry and plant pathology came to be one of humanity’s greatest benefactors.

Apparently in 1970 the Nobel Peace Prize still meant something.