Although urban areas account for just 1.5% of the Earth's land area, they contain over 50% of the world's population. Much of Earth's population growth also occurs in urban areas: 54% in 2014, which is up from 34% in 1960. Earth has approximately 37 billion acres of land, with nearly 8 billion acres of that land being arable (land capable of being used to grow crops). If by 2050 the world's population reaches the predicted 9 billion, there would be enough land on Earth for every individual to have 4 acres to themselves.
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