Paul R. Ehrlich’s1 1968 The Population Bomb is an alarmist text on the dangers of unchecked population growth.
The Population Bomb (or at least the 1970 edition I found at Dana Porter Arts Library) begins with this straight-forward assertion.
The battle to feed all of humanity is over. In the 1970s hundreds of millions of people will starve to death in spite of any crash programs embarked upon now. At this late date nothing can prevent a substantial increase in the world death rate.
What reasoning led Ehrlich to this conclusion and what solutions did he propose?