Controversies 159 years after Darwin have rendered his 'mechanism' a mystical idea, nebulous and incomprehensible. Has natural selection become the phlogiston of the 21st century?
Every once in awhile, biologists argue over whether evolution is predictable. The latest flap over stick insects sticks up for predictability, but flops.
Touted as an evolutionary explanation for bird egg shapes, a new hypothesis celebrating natural selection falls like Humpty Dumpty under a gentle breeze of questioning.