Weave together the many narratives of world history with our highly curated and expanding selection of diverse, fascinating resources designed to showcase the breadth and richness of Earth's story, from the earliest traces of human civilization to the dramatic developments of contemporary cultures.
Hours of research by our editors, distilled into minutes of clarity.
In a 1939 letter to Franklin D. Roosevelt, Albert Einstein explained that nuclear fission could produce immense energy—and devastating weapons. The warning helped spur the Manhattan Project, a role Einstein later deeply regretted.
Nuclear fission occurs when a heavy atom is split into smaller atoms, releasing energy and triggering chain reactions. This short PBS NOVA video uses simple demonstrations to show how fission works and why it’s so powerful.
The Manhattan Project relied on three main sites: Oak Ridge, which enriched uranium; Hanford, which produced plutonium in large reactors; and Los Alamos, which designed and assembled the bombs—work that culminated in the Trinity nuclear test in 1945.
Long before modern healthcare, medieval Europe established hospitals that served multiple roles, including religious, social, and medical purposes. This podcast explores how institutions like Siena’s Ospedale di Santa Maria della Scala supported urban and rural communities for centuries.
In the Middle Ages, Europe was divided into hundreds of kingdoms, duchies, and territories, bearing little resemblance to modern borders. This map captures the political landscape in 1444, as the Ottoman Empire was in the midst of its rise.
Built over centuries by Islamic rulers in medieval Spain, the Alhambra used canals and pressurized tanks to move water throughout the complex. Its sophisticated system supplied fountains, baths, and gardens, showcasing advanced medieval engineering.
Medieval bestiaries combined observed animals with fantastical creatures, using vivid imagery to convey symbolism and moral meaning. This lecture explores England’s Worksop Bestiary (c. 1185), showcasing over 100 illustrated beasts from the Morgan Library’s collection.
After the fall of the Western Roman Empire, Europe fragmented into agrarian Christian kingdoms that fostered the development of universities, guilds, and expanding commerce. Far from a “Dark Age,” the medieval era shaped Europe as a distinct cultural and political unit.
Between roughly 800 and 1200 CE, seafaring Vikings from Scandinavia combined skilled craftsmanship with violent coastal raids. Their expeditions extended cultural influence from the British Isles to Northern Africa, reshaping medieval trade, warfare, and settlement patterns.
The Black Death killed tens of millions across Europe, but the labor shortages that followed shifted economic power. With fewer workers available, survivors demanded higher wages and better conditions—sparking what historians call a medieval “Golden Age of Labor.”