Mindblownology 101 (Earth & Life): 1) There are other species on our planet that make tools, learn language, and develop traditions. 2) All life (from a bacterium to a giant squid to a Kim Kardashian shares the same basic genetic structure and a common ancestor that existed 3.5 billion years ago 3) There were other human species on this planet only 12,000-13,000 years ago There were up to four different species on Eurasia alone (that we know about), and we probably interacted and mated with at least two of them 4) Our species emerged from an area smaller than modern day Eritrea about 200,000 years ago, and managed to colonize almost every available landmass on the planet in less than 60,000 years 5) All complex multi-cellular life on the planet has emerged in only the last 500 million years of Earth's history. That means for 90% of Earth's existence there was either no life or only life that you would need a microscope to see with a human eye!