Readers like you keep news free for everyone.

More than 5,000 readers have already pitched in to keep free access to The Journal.

For the price of one cup of coffee each week you can help keep paywalls away.

Support us today
Not now
Wednesday 29 November 2023 Dublin: 5°C

# He's with me

All time
Monogamy evolved so fathers could protect kids being killed by rivals
A second study showed that monogamy appeared as a result of competition.