@article {309015,
	title = {Mystery Humans Spiced Up Ancient{\textquoteright}s Rampant Sex Lives},
	year = {2013},
	doi = {10.1038/nature.2013.14196},
	url = {http://www.nature.com/news/mystery-humans-spiced-up-ancients-rampant-sex-lives-1.14196},
	author = {Callaway, E.}
}
