The food and people dilemma (The Man-environment system in the late twentieth century)

mindseye49 The future of population growth from a relatively unusual perspective

mindseye49 The reality of population growth - If a water lily doubles in size every day and would cover the pond in 30 days, when would it cover 1/2 the pond ? answer = 29 days !so what constitutes a full earth for humanity? and have we already passed day 29?