Less than half of the world’s cultures kiss their romantic partners.

SEX
It happens at their most fertile stage of the month.
What if a condom could tell you everything you needed to know about your partner's sexual history?
Physician (and Corn Flakes inventor) John Harvey Kellogg had a lot of thoughts on how 19th-century girls could be happy and healthy.
For the first time, scientists have discovered a fish that can asexually reproduce in the wild.
When love is in the air for certain moth species, the female secretes a pheromone to signal that she’s ready to make little moths. An interested male will approach and “sing” her a courtship song composed of a series of ultrasonic pulses.
For famous writers like F. Scott Fitzgerald and his wife, Zelda, turbulent real-life relationships rivaled the dramas that played out on the page.
Travel back to a time when 'lady’s low toupee' and 'Master John Goodfellow' were perfectly acceptable terms for genitalia.
Alfred Kinsey, biologist, pioneering sex researcher and founder of the Institute for Sex Research at Indiana University, once wrote that "a marked quiescence of the total body is the most widely recognized outcome of orgasm," more noticeably among males