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310 courses, six subjects, 30 languages.

The introduction of every course is free to read here. The rest is in the app.

All · 310 courses
History · 9 minWhy do we have time zones?1884 · Nathan HewittUnderstanding the world · 8 minDoes AI use a lot of energy?Behind every answer · Rana AbdallaUnderstanding the world · 9 minWhere does your electricity actually come from?An invisible mix · Rana AbdallaLiterature · 7 minDid Aesop really exist?The slave who told the truth · Simon LeaLiterature · 8 minWhy did Aurore Dupin call herself George Sand?A novelist in men's clothes · Simon LeaHistory · 9 minHow could Rome be sacked and conquered?410History · 8 minBlitzkrieg1940Literature · 8 minHow did Anne Frank's diary survive?Three notebooks, two versions · Simon LeaLiterature · 8 minWhy did Machiavelli write The Prince?1513 · Simon LeaLiterature · 8 minWhat is the oldest book in the world?Circa 2000 BC · Simon LeaScience · 7 minWhy do some people hate coriander?A taste of soap · Stacy JankowskiScience · 8 minWhy do we blush?The most human expression · Stacy JankowskiScience · 8 minWhy do we hate the sound of our own recorded voice?The sound of self · Stacy JankowskiScience · 8 minWhy do we laugh when we're tickled?Knismesis and gargalesis · Stacy JankowskiHistory · 10 minHow did Christianity go from persecuted to official?From Constantine to Theodosius · Vedran ObucinaHistory · 9 minWhat was the deadliest war in history?The Taiping Rebellion · Vedran ObucinaLiterature · 9 minWhere did science fiction come from?From Lucian to Frankenstein · Vedran ObucinaHistory · 7 minWhat was the Marshall Plan really aiming at?1947-1952History · 9 minWho drew Africa's borders?The Scramble for Africa · Vedran ObucinaMythology · 8 minWho invented zombies?From Vodou to Hollywood · Vedran ObucinaScience · 7 minWhat Is the Antikythera Mechanism?2nd century BCHistory · 9 minWhy didn't the United States win in Vietnam?1955-1975History · 9 minHow were the Nazis put on trial at Nuremberg?1945-1946History · 9 minHow did decolonization redraw the world map?1945-1975
The rest of every course is in the app.The quiz, the glossary and the 30 languages. Free to start.