Several images of people smiling

Why Are Americans So Cheery?

How Americans went from loving melancholy to focusing on controlling their emotions -- and destinies.
Girls in a swimming class entertain an audience of neighborhood residents at Mullanphy Pool in St. Louis, MO

When Cities Closed Pools to Avoid Integration

Many Americans lack nearby municipal pools, the lasting result of extralegal Jim Crow-era efforts to keep races segregated at all costs.
Scottish Highlanders

What Does It Mean To Be Celtic?

How various nationalist groups have come to use "Celtic" as a coded way of saying "white."
Presidents Tyler, Fillmore, Andrew Johnson, Arthur, Theodore Roosevelt, Coolidge, Truman, Lyndon Johnson, and Ford

The Accidental Presidents of the United States

How "accidental" world leaders have faced the challenges of leading major democracies without being voted in.
Protestors from lesbian, gay and bisexual rights charity Stonewall, carrying a banner reading 'Lesbian & Gay Rights are Human Rights' during the Gay Pride parade in London, England, United Kingdom, 6 July 1996

The Stonewall Riots Didn’t Start the Gay Rights Movement

Giving Stonewall too much credit misses the movement’s growing strength in the 1960s, sociologists note.
Orphan asylum boys picking currants

When Foster Care Meant Farm Labor

Before current foster care programs were in place, Americans depended on farmers to take care of kids in exchange for hard labor.
A young Irish woman working at a spinning wheel. Engraving by Francis Holl

How War Revolutionized Ireland’s Linen Industry

During the Napoleonic Wars, Irish women, who had traditionally only spun flax into thread, took over the traditionally male job of weaving linen as well.
Into the Jaws of Death by Robert F. Sargent

The Weather Forecast That Saved D-Day

Operation Overlord launched the invasion of German-occupied Europe during WWII. But the right weather, tides, and moonlight were essential for it to work.
A Navy Marine Mammal Program (NMMP) California sea lion waits for his handler to give the command to search the pier for potential threats during International Mine Countermeasures Exercise (IMCMEX in Manama, Bahrain

Navy Seals: Why the Military Uses Marine Mammals

A beluga whale was suspected to be a spy. It's not as outlandish as it may seem.
Croquet Scene by Winslow Homer, 1866

The Dangerous Game of Croquet

Many 19th-century observers were disturbed by the way young people took the co-ed sport of croquet as an opportunity to flirt.