Biology
The Evolution of Marriage Norms in Post-Industrial Societies
Quick fact
In the United States, the median age at first marriage has risen from about 22 for women and 24 for men in 1970 to about 28 for women and 30 for men in 2020, and more adults now live together before or instead of marrying.
Why this is interesting
You probably know that marriage has changed a lot since your grandparents' time, but did you know that in many post-industrial countries, marriage is no longer the default path for adults? Why did a once-universal institution become just one of many options?