Worries about population expansion resurfaced with World War I. “Population pressure is always a major cause of war,” remarked biologist Raymond Pearl in his 1925 book The Biology of Population Growth. As head statistician for the U.S. Food Administration during the conflict, Pearl had to keep an adequate supply of food flowing to troops, witnessing first-hand the economic struggles that Malthus had predicted. After the war, with statistician Lowell Reed, he developed a “logarithmic curve” to investigate how populations change… More at Nautilus.
A brilliant article.