He wasn't a mathematician. He wasn't an inventor. He was just a 20-something guy who liked to poke around in the dirt.
Yet, Charles Darwin developed a theory of evolution so significant that it forms the bedrock of biology, and so radical it is still controversial in some circles today.
In 1859, when he was 50, Darwin published "On the Origin of Species," the work that outlined the theory of natural selection and left every high-schooler hankering for a trip to the Galapagos Islands.
But he...Full Story