'Bad is good as a mating strategy' (NewScientist PDF | plain text). "Nice guys knew it, now two studies have confirmed it: bad boys get the most girls." Being slightly evil ensures a prolific sex life according to a survey of more than 35,000 people in 57 countries. (ABC News: Why Nice Guys Finish Last).
Humans are evolving more rapidly than in the distant past, according to a new study published in PNAS. "The massive growth of human populations has led to far more genetic mutations, and every mutation that is advantageous to people has a chance of being selected and driven toward fixation. We are more different genetically from people living 5,000 years ago than they were different from Neanderthals", says lead author John Hawks. [more inside]
Mothers who wait to have a baby are at risk of evolutionary extinction. "If you want to see your line persist, then it's probably optimum to start reproducing in your early to mid-20s". According to this 220 year statistical model late-reproducing women [genetic lineage] declined as a proportion of the population from 11 percent to about 5 percent