The increase in complexity from simple replicating molecules to complex animal societies has involved approximately eight major evolutionary transitions 6,7. Almost all of these transitions have ...

Hotly debated human papilloma virus (HPV) vaccinations are being given to girls as young as age 11. Some say it is essential to protect them from contracting HPV and reducing their risk of developing ...

NEW YORK (CBS 2)-- A new study suggests there may be a biological reason for infidelity. A group of New York researchers say it's all in the genes -- and not your blue ones. When it comes to monogamy, ...

In the late ‘60s and early ‘70s, when “sleeping with someone was almost like shaking hands,” womanizers had a certain allure, according to Norris Church Mailer in her charming new memoir A Ticket to ...

Promiscuity mixes up the gene pool and dilutes genetic differences between populations, slowing down the evolution of new species, says new research by an international team led by the University of ...

Females are coy and males are ardent. This was Darwin’s somewhat Victorian portrayal of the sexes in his book The Descent of Man and Selection in Relation to Sex. The myth that males are naturally ...

Via Andrew Sullivan, I see that the gay journalist Marc Ambinder has come up with a provocative neologism in his latest Week column. Excerpt: Where will we end up? Will promiscuity define young gays ...

"Slutty" behavior is good for the species. That's the conclusion of a new wave of research on the evolutionary drives behind sexuality and parenting. Women everywhere have been selflessly engaging in ...

An error has occurred. Please try again. With a The Portland Press Herald subscription, you can gift 5 articles each month. It looks like you do not have any active ...

Keith Smith is co-founder and CEO of BigDoor, a company which uses game mechanics to increase user engagement, loyalty and monetization. I hate to break it to you, but your online customers aren’t as ...