Free Courses

Learn probability theory — essential for a data scientist — using a case study on the financial crisis of 2007–2008.

Build a movie recommendation system and learn the science behind one of the most popular and successful data science techniques.

Reimagine global health problems with some of the leading global health thinkers and actors through a case-based biosocial framework.

Learn the fascinating history of Igor Stravinsky’s The Rite of Spring, one of the most challenging and rewarding ballets ever written.

Top chefs and Harvard researchers explore how traditional and modernist cooking techniques can illuminate basic principles in chemistry, physics, and engineering. Learn about elasticity, viscosity, mayonnaise, baking, and more!

Expand your learning of chemistry and thermodynamics by exploring entropy, free energy, and equilibrium.

Join Harvard University instructor Pavlos Protopapas in this online course to learn how to use Python to harness and analyze data.

Learn how electricity makes the neurons in your brain tick.

Learn how to protect your own data, devices, and systems from today's threats.

Discover what makes your brain tick in this third course in our introductory series in neuroscience.

Understand how the FDA regulates pharmaceuticals and explore debates on prescription drug costs, marketing, and testing.

The culmination of the MicroBachelors® program.

Build a foundation in R and learn how to wrangle, analyze, and visualize data.

Explore how entrepreneurs build successful businesses by moving technology from lab to market.

Increase your quantitative reasoning skills through a deeper understanding of probability and statistics, with the engaging “Fat Chance” approach that’s made this course a favorite among learners worldwide.

Gain an understanding of history, museum studies, and curation by looking at, organizing, and interpreting art, artifacts, scientific curiosities, and the stuff of everyday life.

Learn about the forces in American politics that seek to influence the electorate and shift the political landscape.

Explore the ethical controversies of financial markets.

Show what you’ve learned from the Professional Certificate Program in Data Science.

Learn about the Earth, life, and how we can search for life elsewhere in the universe.

Learn skills and tools that support data science and reproducible research, to ensure you can trust your own research results, reproduce them yourself, and communicate them to others.

Learn about public policy in America and the dynamics of American politics.

Find innovation opportunities in health care technology, management, consulting, or investing by examining health care cost, quality, and access.

This course picks up where CS50 leaves off, diving more deeply into the design and implementation of web apps with Python, JavaScript, and SQL using frameworks like Django, React, and Bootstrap.

An exploration of the magnetic and ambivalent character of Shylock in William Shakespeare’s The Merchant of Venice.

Contracts are a part of our everyday life, arising in collaboration, trust, promise and credit. How are contracts formed? What makes a contract enforceable? What happens when one party breaks a promise?

An overview of divination systems, ranging from ancient Chinese bone burning to modern astrology.

Study Baroque and Classical opera through Handel’s Giulio Cesare and Mozart’s Don Giovanni

Examine how great modern writers capture the intricacies of our globalized world and how their works circulate within that world to find their own audiences.

Gain critical communication skills in writing and public speaking with this introduction to American political rhetoric.