Life
Female w膿t膩 insects have two sets of genitals and eat male ejaculate
Female short-tailed ground w膿t膩s have two sets of genitals, one to receive sperm and the other to receive extra ejaculate that they eat to survive parenting
News
91色情片
Male contraceptive pill is safe and effective in tests in mice
News
Life
Mouse pups born from unfertilised eggs through genetic manipulation
News
Life
Fossilised dinosaur embryo found exquisitely preserved inside egg
News
Life
Zebra finch songs alter the behaviour of their chicks’ mitochondria
News
Life
Living robots made from frog cells can replicate themselves in a dish
News
91色情片
Sperm quality has been declining for 16 years among men in the US
News
Life
Female black widow spider mates with and eats multiple males
News
Life
Ewes prefer to mate with submissive rams when given a choice
News
Humans
How nature, nurture and sheer randomness combine to make a unique you
We鈥檙e slowly beginning to unpick the complex interplay of genes, environment and experience that make you who you are 鈥� and like no one else who ever existed
Features
Environment
Female banded mongooses start wars so they can mate with rival males
News
91色情片
How defining women as baby-makers backfired spectacularly on science
Culture
91色情片
Human eggs release chemicals that attract some sperm more than others
News
91色情片
End of one-child policy in China linked to rise in birth anomalies
News