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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.
History65 courses
Science57 courses
Literature47 courses
Art45 courses
Mythology46 courses
Understanding the world50 courses
Science · 7 minWhy do we get hiccups?Reflexes & breathing · Stacy Jankowski
Science · 8 minWhy is there cobalt in our batteries?Element 27 · Guido Manuel De La Torre Olvera
Science · 9 minWho killed the first transatlantic cable?1858 · Guido Manuel De La Torre Olvera
Science · 8 minWhy is purple the color of kings?Tyrian purple · Guido Manuel De La Torre Olvera
Science · 9 minWhy does nobody smile in old photographs?Pose, don't smile · Guido Manuel De La Torre Olvera
Science · 9 minCan you edit a human being's DNA?The CRISPR scissors · Kate Waddams
Science · 9 minWhat can you actually learn from your DNA?Genes and fate · Kate Waddams
Science · 10 minWhy are antibiotics starting to fail?The bacteria fight back · Kate Waddams
Science · 8 minHow does a star die?Red giant or supernova · Muhammad Zaheer
Science · 8 minWhat would happen if a supervolcano woke up?A volcanic winter · Muhammad Zaheer
Science · 8 minWhat's actually inside a smartphone?A mine in your pocket · Muhammad Zaheer
Science · 8 minWhy did Mars become a desert?From rivers to desert · Muhammad Zaheer
Science · 8 minWhy is the Moon moving away from Earth?3.8 cm a year · Muhammad Zaheer
Science · 7 minWhy do some people hate coriander?A taste of soap · Stacy Jankowski
Science · 8 minWhy do we blush?The most human expression · Stacy Jankowski
Science · 8 minWhy do we hate the sound of our own recorded voice?The sound of self · Stacy Jankowski
Science · 8 minWhy do we laugh when we're tickled?Knismesis and gargalesis · Stacy Jankowski
Science · 7 minWhat Is the Antikythera Mechanism?2nd century BC
Science · 6 minWhy is the sky blue?Light & atmosphere
Science · 7 minWhy do we dream?Brain & sleep
Science · 7 minWhy does ice float?Water & molecules
Science · 6 minWhy is seawater salty?Oceans
Science · 7 minWhy are there seasons?Earth & Sun
Science · 6 minHow do planes fly?The physics of flightThe rest of every course is in the app.The quiz, the glossary and the 30 languages. Free to start.