How many people can Earth support?
There are nearly 8 billion people(opens in new tab) living on Earth today, but our planet wasn’t always so crowded. Around 300,000 years ago, when Homo sapiens likely first appeared, our total population was small, between 100 and 10,000 people. There were so few people at the start, that it took approximately 35,000 years for the human population to double in size. From 1930 to 1974, the Earth’s population doubled again, in just 44 years.
Right now the scientific consensus is that the population of the world will reach a peak some time later this century. The world population is projected to reach 10.4 billion people sometime in the 2080s and remain there until 2100, according to the United Nations Population Division. However, the further that demographers look into the future, the more speculative and uncertain their predictions become.
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