Creatures… that are born pregnant; with twenty different sexes; that eat their own children; that can survive without water for a quarter of a billion years. Absurd? Not at all.
These are creatures alive on planet Earth. And they show us just how different alien life could be from anything we know.
What does a Martian Look Like? The Science of Extraterrestrial Life (also known in other editions as Evolving the Alien) sets out to do something seemingly impossible: to scientifically describe something we have never seen. The question it asks is what we can know about extraterrestrial life. Of course, we have never found any of that. And yet, Jack Cohen and Ian Stewart also argue against imagining it will be just like life on Earth. Continue reading