Introduction -- Firsts -- Sports -- Horses -- Armor -- Pyramids -- Theatre & performances -- Pirates -- Battles & war -- Sweet treats -- Ancient Maya -- Festivals & holidays -- Dogs -- Space -- Aliens -- Inventions -- In the sky -- Ancient China -- Gold -- Cities -- Mud -- Giant things -- Ancient Rome -- Hair -- Samurai -- Weapons -- Arts & crafts -- Medieval times -- Rulers -- Monsters -- In the desert -- In the snow -- Machines -- Castles -- Underwater -- Skeletons -- Gems -- Teeth -- Vikings -- Warriors -- Legends -- Lost cities -- Explorers -- Antarctica -- Maps -- Mesopotamia -- Mythology & folklore -- Fashion -- Creepy-crawlies -- Books & libraries -- Mali empire -- Buildings & structures -- Studying the skies -- Gupta empire -- Underground -- Discoveries -- Tombs & burials -- Curses -- Decorative arts -- Inca -- Languages -- At sea -- Hauntings & ghosts -- Australia -- Food -- Leaders -- Revolutionaries -- Celts -- Cats -- Mummies -- Ancient Egypt -- Medicine -- Ancestral Puebloans -- Math -- Islamic golden age -- Oldest -- Toilets -- Rats -- Witches -- Tea -- Lost treasures -- Historic heists -- Trains -- Dancing -- Knights -- Games -- The end -- Glossaries -- Meet the FACTopians.