https://en.wikipedia.org/wiki/The_Population_Bomb
He argued that the growing population placed escalating strains on all aspects of the natural world. "What needs to be done?" he wrote, "We must rapidly bring the world population under control, reducing the growth rate to zero or making it negative. Conscious regulation of human numbers must be achieved. Simultaneously we must, at least temporarily, greatly increase our food production."
https://www.amazon.com/Population-Bomb-Paul-R-Ehrlich/dp/1568495870
He argued that the growing population placed escalating strains on all aspects of the natural world. "What needs to be done?" he wrote, "We must rapidly bring the world population under control, reducing the growth rate to zero or making it negative. Conscious regulation of human numbers must be achieved. Simultaneously we must, at least temporarily, greatly increase our food production."
https://www.amazon.com/Population-Bomb-Paul-R-Ehrlich/dp/1568495870