Our happy hour fact to amaze your drinking buddies with.

People rated attractive as children are more likely to grow up and have daughters compared to those who are rated unattractive.

Evolutionary psychologist Satoshi Kanazawa, who teaches at the London School of Economics, was able to get access to information about 17,000 children who were born in 1958 and evaluated on their attractiveness in 1965. He then interviewed the participants in that study at age 45, and found that those who had been marked as unattractive were parents of boys 56 percent of the time. The gender ratio of the attractive subjects' offspring was about 50/50.

Kanazawa's quick explanation: Attractiveness is more valuable to men in choosing mates (than to women), and that fact is likely driving this disparity in offspring gender.

Other scientists are skeptical of these findings, but it could just be that they're bitter because they have a bunch of sons.