Humans are the only species to live in every environmental niche in the world—from the icesheets to the deserts, rainforests to savannahs. As individuals we are rather puny, but when we are socially connected, we are the most dominant species on the planet.
Click here for original story, 65,000-year-old ‘stone Swiss Army knives’ show early humans had long-distance social networks
Source: Phys.org