Are Humans Significant? A Scientist Answers

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Based on the cumulative efforts of scientists over the years, we now know that our solar system is roughly 4.6 billion years old, the universe is roughly 13.8 billion years old, and the cosmos is really big. Conversely, human beings have been on Earth for about one million years (but we’ve only been civilised for the last 50 thousand of those years.) We also know that Earth is about 6700 km deep, from surface to the centre of the core, yet the deepest we’ve drilled into Earth is only 12 km (the Kola Borehole in Russia.) More to the point, we are terrestrial animals. As a species, our survival ultimately depends on us being lucky enough not to suffer the same fate as the dinosaurs – who were killed by a massive asteroid impact 65 million years ago.

Source: Are Humans Significant? A Scientist Answers

Also see: Mankind: The Most Random Occurrence

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