Courses from 1000+ universities
Discover an easier way to explore affordable, credit-worthy online courses with our expanded community college catalog.
600 Free Google Certifications
Web Development
Python
Graphic Design
Astronomy: Exploring Time and Space
Inglés empresarial: ventas, gestión y liderazgo
AI and Big Data in Global Health Improvement
Organize and share your learning with Class Central Lists.
View our Lists Showcase
Recreating ancient medicines and testing them with Bill Gates, exploring historical remedies and modern pandemic prevention strategies through hands-on experiments and insightful discussions.
Learn to create a functional gas mask using primitive techniques inspired by the anime Dr. Stone. Explore knife-making, leatherwork, and activated charcoal production in this hands-on DIY project.
Explore the creation of a sword that symbolizes the end of the Bronze Age, delving into ancient metallurgy, warfare, and historical significance.
Explore the intricate process of creating a t-shirt from scratch, from growing cotton to dyeing and printing, in this engaging DIY journey spanning three years.
Explore the process of recreating a Game of Thrones-inspired obsidian and metal axe through melting dragonglass and casting techniques.
Explore early gunpowder weapons through hands-on experiments, from fireballs to fire arrows. Discover the history and evolution of these revolutionary armaments.
Explore humanity's technological journey from Stone Age to Bronze Age through hands-on demonstrations of ancient techniques, from fire-making to metalworking, agriculture, and early engineering.
Recreating Hero's aeolipile to test if the first steam engine could be functional. Exploring the potential for an earlier industrial revolution through ancient technology.
Explore humanity's technological evolution from the Iron Age through Medieval times through hands-on demonstrations of ancient crafts, from iron smelting and papermaking to brewing and metalworking.
Experience a hands-on journey through building and testing a functional replica of Leonardo da Vinci's windmill design, from constructing the mechanical head and gears to assembling the sail system.
Get personalized course recommendations, track subjects and courses with reminders, and more.