In the late 1960s and early 1970s some environmentalists began making a sensational claim. The world’s ever increasing population, they claimed, would soon outstrip the planet’s limited resources leading to an environmental disaster. In these doom and gloom scenarios, a massive worldwide famine was just around the corner. The number of people would keep increasing while the amount of food available would stay the same or even decline. The result, the experts argued, was famine by the early 1980s at the latest. The only way to decrease the ....