Can Earth Only Sustain 7 Billion People?

Carrying capacity is defined as the number or quantity of people or things that can be conveyed or held by a vehicle or container. Some scientists have thought of Earth as a "vehicle or container" that has a specific capacity number. It is important to ponder about this matter as longevity increases and, thus, the number of humans living on Earth. 

In an article, titled: "The Earth’s carrying capacity for human life is not fixed," writer and environmental policy expert, Ted Nordhaus, analyzes the problem that is inherent when giving Earth a carrying capacity.

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