U.S. History
All the major chapters in the American story, from Indigenous beginnings to the present day.
World History
History from countries and communities across the globe, including the world’s major wars.
Eras & Ages
From prehistory, though antiquity and into the 21st century, all of history’s biggest chapters.
Culture & Tradition
The stories behind the faiths, food, entertainment and holidays that shape our world.
Science & Innovation
The pivotal discoveries, visionary inventors and natural phenomena that impacted history.
Learn about the Iran-Contra Affair under President Reagan who secretly supported an anti-Communist group in Nicaragua and funneled weapons to Iranian terrorists in exchange for American hostages. Discover how Lt. Col. Oliver North was found guilty.
On January 28, 1986, the tenth mission of the space shuttle Challenger ended in tragic disaster. We remember the seven astronauts who lost their lives that day, including Christa McAuliffe, who was chosen by NASA to pioneer its Teacher in Space program.
Seventy three seconds after take off the Space Shuttle Challenger encounters unexpected disaster. Find out more in this clip from Season 1, "Challenger Disaster."
As the Civil War teetered, Lincoln weighed the Emancipation Proclamation—an audacious act that reshaped the nation’s course.
Doris Kearns Goodwin shares how President Lyndon B. Johnson, despite fierce resistance, rose to meet a defining moment in U.S. history.