
Shermer and Cooke discuss: the definition of male and female across the animal kingdom • male bias in the history of science • genes involved in sex determination and how they work • sexual selection • adaptationism vs. non-adaptationism • Why do women have orgasms? • why female animals are just as promiscuous, competitive, aggressive, dominant and dynamic as males • what humans can learn from non-human animals • maternal/paternal instincts • patriarchy/matriarchy across the animal kingdom • why the sexes are far more alike than they are different.

The incest taboo is a human institution; we universally prohibit having sex with siblings, parents, or grandparents, but vary culturally regarding cousins, uncles, and others on our family tree. We disagree on how far prohibition should go, and why. Indeed, natural selection primed us for cousin marriage as it offers some evolutionary advantage. In this article, which appeared in Skeptic magazine 24.2 (2019), Gabriel Andrade asks: How truly dangerous is cousin marriage, and should it be legalized?
When will the world end? How likely is it that intelligent extraterrestrial life exists? Are we living in a simulation like the Matrix? Is our universe but one in a multiverse? How does Warren Buffett continue to beat the stock market? How much longer will your romance last? In Science Salon # 76 — a wide ranging conversation with Michael Shermer — science writer William Poundstone answers these questions and more. PLUS Gabriel Andrade examines the incest taboo and asks: How truly dangerous is cousin marriage, and should it be legalized?
In this week’s eSkeptic, Chuck Lemme responds to our reviews of Race: The Reality of Human Differences by Vince Sarich and Frank Miele; Sarich and Miele respond.