Environment
Why does semen make female fruit flies more aggressive?
Molecules smuggled in alongside sperm can have big effects on female fruit flies' behaviour, says evolutionary biologist Eleanor Bath
Opinion
60 Seconds
News
Male spiders lure aggressive females with peek-a-boo paddle game
News
Environment
Male spiders lure aggressive females with peek-a-boo paddle game
News
Humans
Dinosaurs took part in building competitions to attract females
News
Environment
Take beard inspiration from the amazing styles of other primates
Features
Health
US drops lifetime ban on gay men donating blood
News
Environment
Pandas don’t lack sex drive, they just need to fancy each other
News
Health
Obese men found to make sperm with thousands of modified genes
News
Environment
Howler monkeys have to choose between big balls and big bawls
In species with the largest vocal organs, males have the smallest testicles, suggesting an evolutionary trade-off between winning mates and making sperm
News
Health
‘Gay test’ fear mustn’t derail work on sexuality’s genetic basis
Opinion
Humans
Top exoplanet hunter keeps job despite serial sexual harassment
News
Earth
Bean beetle displays spiky penis before damaging sex
Regulars
Humans
Why did sex evolve? Blame an ancient hook-up
Opinion