CHEAP SEX

Animal researchers in Singapore have discovered that humans aren’t the only species that pay for sex. An investigation into 50 long-tailed macaques in Indonesia discovered that male macaques “pay” for sex by providing grooming services to the females, and that the price of sex goes up and down depending on market forces. While a male wooing a single female would have to groom her for up to 16 minutes before sex was offered, the cost of sex dropped to just eight minutes of work when there were several females in the area. (New Scientist)