Male flies produce a chemical that makes females sleep in after mating

22 December 2022

A “sex peptide” transferred from male to female fruit flies during mating interferes with the female’s biological clock, reducing her chances of mating again

Male contraceptive pill is safe and effective in tests in mice

23 March 2022

A daily pill drastically reduced sperm counts in mice with no side effects, but many male contraceptives have previously failed in human trials

Human eggs release chemicals that attract some sperm more than others

10 June 2020

A person’s eggs release chemicals after sex that preferentially attract sperm from certain people, which might help explain why some people have fertility problems

Sex

21 June 2019

Male fruit flies feel pleasure when they ejaculate

19 April 2018

Male insects have been genetically engineered to climax on command, and it seems they get a real buzz out of it – perhaps even a fly orgasm

Biggest ever family tree shows when cousins stopped having sex

1 March 2018

A family tree of 13 million people has been built using data from an ancestry website, and it reveals when and why people started avoiding marrying close relations