A study links having a male twin with women’s educational, financial, and childbearing decisions. Researchers suspect prenatal exposure to testosterone may play a role.
In Chapter 6, “The Hormonal Essence of the T-Rex?” author Cordelia Fine considers the biological dogma that testes, and the powerful hormones they exude, are the root of all sexual inequality.
In the long-fought battle against baldness, researchers are finally identifying molecular pathways that can be manipulated to generate new hair follicles.