How could something as complex as the human brain have evolved from a simpler structure? Does evolution naturally produce complexity? When Charles Darwin published On the Origin of Species, some scientists brought up a challenge to his theory of evolution: Complex features are difficult (if not impossible) to create through small increments as Darwin had suggested. In the last edition of his book, Darwin responded. Keep reading to learn about the evolution of complexity.
The Evolution of Complexity: Charles Darwin Responds to Critics










