Have you ever wondered why our universe is made up of something rather than nothing? It can hurt your brain if you think about it too much because if there were nothing you would have no brain—no you ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Introduction. Definition of natural selection ; Relationship to genetic drift and evolution ; Restricted meanings of "natural selection" ; Modes of selection ; Summary -- Philosophical comments.