Alien DeceptionWhen the Aliens Arrive, What Will They Look Like? A Zoologist Has Answers Posted on March 21, 2021 by Administrator Kershenbaum, a scientist at the University of Cambridge, asserts that the “universal laws of biology” that govern life on Earth also apply to aliens. The most important is that species evolve by natural selection, the bedrock idea of evolutionary biology proposed by Charles Darwin. No matter how alien biochemistry might work and no matter how planetary environments might differ, Kershenbaum argues that some version of Darwinian selection would be at work — and would have channelled alien evolution to restricted menus of possibilities.