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.
The reactor at the center of the Chernobyl disaster was one of the most powerful machines ever built. But it contained a series of design flaws that made it uniquely vulnerable under the wrong conditions.
On April 26, 1986, a routine safety test at the Chernobyl Nuclear Power Plant spiraled into the worst nuclear disaster in history. But the explosion wasn't caused by a single mistake—it was a series of catastrophic mistakes.
Being exposed to radiation from the fallout of the Chernobyl disaster was like "getting a thousand chest X-rays at once."
Uncover the realities of life in East Germany, from daily struggles and state surveillance to the enduring spirit that shaped its unique cultural identity and history.
In 1957 West Germany, a covert plot unfolds as operatives develop a lethal mist designed to eliminate a target without leaving a trace, risking escalation during the Cold War.