8 Billion People: How Evolution Made It Happen

November 15, 2022 marked a milestone for our species, as the global population hit 8 billion. Just 70 years ago--within a human lifetime--there were only 2.5 billion of us. In AD1, fewer than one-third of a billion. So how have we been so successful? Humans are not especially fast, strong, or agile. Our senses are […]