And other 4th of July facts.
In the late 1800s, electric boats were a promising new technology. They are now enjoying a revival.
A 1927 study by famed efficiency expert Lillian Moller Gilbreth revealed how American women dealt with menstruation -- and how they wished they could.
When sex work was considered a "necessary evil," legal brothels provided certain protections for the women who worked there.
Since the 1980s, more and more couples have sought therapy. Why is it so helpful to have that third person in the room?
An unexpected day off work and school can take on the trappings of a religious ritual.
How a company that started off selling cuticle remover convinced American woman to paint their nails.
We shouldn't see changes in Americans’ sex lives as a single phenomenon with an overarching cause.
Fluoroscopes were used in shoe stores from the mid-1920s to 1950s in North America and Europe -- even though the radiation risks of x-rays were well-known.
Can housework be anything other than drudgery? Maybe part of the problem is that we consistently devalue unpaid work.