Health
Men’s sperm quality decreases at age 35
Both the quality and quantity of sperm start to decline earlier than was thought, and older men become more likely to have girls
News
Environment
First evidence of what peahens look at in a mate
News
Environment
Chimps have experimented with sex more than humans
News
Humans
Voice almighty: Decoding speech’s secret signals
Features
Humans
Control sex for humanity’s future
Culture
Humans
Designer babies are on the horizon but aren’t here yet
Opinion
Humans
First baby born after full genetic screening of embryos
News
Humans
Zoologger: Hipster toad has weaponised moustache
News
Humans
Does banning prostitution make women safer?
Opinion
Humans
Mice lacking serotonin swap sexual preferences
Female mice unable to respond to serotonin prefer to sniff and mount their own sex over males
News
Environment
Zoologger: The tiny insect with the massive sperm
News
Humans
Brutal battles of animal sexes
Books & Arts
Environment
Zoologger: Picture-winged fly quenches thirst on sperm
News
Health
US women can get morning-after pill over the counter
News