As one of the hosts of DNews for the last two years, Tara Long had been able to cover a number of incredible scientific breakthroughs: Finding water on Mars, birth control for men, and the usefulness of bras, to name but a few. But alas, there's still many mysteries out there, continuing to defy scientific explanation (and let's face it: science would be totally dull if we had all the answers).
A study published in the journal Archives of Sexual Behavior may have made a few steps forward to solving one of mankind's greatest mysteries: how and why did homosexuality evolve? This research posits that same-sex attraction may act as a method of ensuring social bonding amongst groups of humans.
In their study, researchers looked at the relationship between sexual attitudes and progesterone, a naturally occurring hormone in men and women. For women, it plays a crucial role in both menstruation and conception. In men, where it's often referred to as the "source hormone", it gets converted into testosterone and other essential male hormones. People with higher levels of progesterone -- both men and women -- seemed more open to the idea of having a same-sex experience.