If the Universe Is Teeming with Aliens ... WHERE IS EVERYBODY?: Seventy-Five Solutions to the Fermi Paradox and the Problem of Extraterrestrial Life

by Stephen Webb

First, a living object must be made of cells. Every living creature on Earth consists either of a single cell or a collection of cells. If we knew how cells originated, then we might well be on the road to understanding how life itself originated.

Life?