| Students of Virginity In the Ivy League, abstinence is a) philosophical, b) research-based, c) an outgrowth of feminism, d) sexy and fun, e) all of the above. nytimes.com |
How genes pick our mates for us When picking a mate, Americans seek out new immune genes but some Africans don't feeds.newscientist.com |
Monogamy gene found in people Variations in the gene for a hormone that makes voles monogamous may determine whether men are serial commitment-phobes or devoted husbands feeds.newscientist.com |
Spanking 'brings couples together' Stress associated with sadomasochistic activities soon dies away, hormone studies show, and couples report increases in relationship closeness feeds.newscientist.com |
Ducks fight the battle of the sexes in their genitals Male Muscovy ducks have evolved super-long penises – with "explosive erection" ability – while females retaliate with antagonistic vaginas feeds.newscientist.com |