How Commonly Was Smallpox Used as a Biological Weapon?
Once introduced into the Americas, smallpox spread everywhere. Is it possible to know how often that was done intentionally to kill people?
How the Black Labor Movement Envisioned Liberty
To Reconstruction-era Black republicans, the key to preserving the country’s character was stopping the rise of a wage economy.
Celebrating National Poetry Month
Our best stories about poetry and poems offer free links to poems from contemporary and classic American poets.
Black Conquistadors and Black Maroons
Some formerly enslaved Blacks and freedmen accompanied the Spanish invaders; others formed their own communities.
The Origins of the Feminist Art Movement
Before the Guerrilla Girls, Women Artists in Revolution pressured institutions to include women artists, inspiring similar groups around the U.S.
What Happens to a Tree When It Dies?
Decomposing trees on the forest floor become "dead wood"—a part of ecosystems that researchers are only beginning to understand.
Does It Matter Who the Real Rosie the Riveter Was?
Many women have claimed to be the model behind the iconic poster.
How Einstein Became a Celebrity
His theory of general relativity was well known in the U.S., but his 1921 visit caused a sensation.
How American Women First Learned Self-Defense
Jiu-jitsu, judo, boxing, and wrestling raised eyebrows. But physical strength and political empowerment went hand in hand.