In most living animals, egg cells are vastly larger than sperm cells. In humans, for example, a single egg is 10 million times the volume of a sperm cell. In a new study, Northwestern University ...

Forbes contributors publish independent expert analyses and insights. Michelle Bruton covers action sports and the Olympics and Paralympics. Natural Selection Tour, the brainchild of pro snowboarder ...

The common view of natural selection is based solely on the individual: A trait allows an organism to out-compete its rivals and is thus passed down to its offspring. To suggest otherwise can provoke ...