Free Courses

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

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

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?

Learn to forecast the weather just by looking out your window.

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.

A human-centered approach to the fundamentals of cell biology with a focus on the power plants of the cell - mitochondria.

Learn how to create, read, update, and delete data with relational databases.

Learn the skills and tools of improvement science to make positive changes in health, healthcare, and your daily life.

Learn to deliver high-quality primary health care at scale through national community health worker programs.

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

Why should we care about Confucius? Explore ancient Chinese philosophy, ethics, and political theory to challenge your assumptions of what it means to be happy, live a meaningful life, and change the world.

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

Learn introductory programming and data analysis in MATLAB, with applications to biology and medicine.

Learn about Hector Berlioz’s Symphonie Fantastique, an iconic Romantic symphony that ushered in an era of narrative “program music.”

Discover Handel’s Messiah in this installment of First Nights, which will explore five masterpieces of western music.

Learn to process and convert raw data into formats needed for analysis.  

An overview of modern Chinese history, including the fall of the Qing and the end of imperial China.

Learn inference and modeling: two of the most widely used statistical tools in data analysis.

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.

A quantitative introduction to the energy system and its environmental impacts.

Learn how global warming impacts human health, and the ways we can diminish those impacts.

Explore the archaeology, history, art, and hieroglyphs surrounding the famous Egyptian Pyramids at Giza. Learn about Old Kingdom pharaohs and elites, tombs, temples, the Sphinx, and how new technology is unlocking their secrets.

Explore the birth of modern China with a focus on the time between the fall of the Qing and the end of World War II.

Learn how to use decision trees, the foundational algorithm for your understanding of machine learning and artificial intelligence.

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.

Learn how to face and meet today’s challenges and design a public value proposition that is both actionable and value creating.

Combine literary research with data science to find answers in unexpected ways. Learn basic coding tools to help save time and draw insights from thousands of digital documents at once.

An introduction to the intellectual enterprises of computer science and the art of programming.

This free webinar from HKS Professor Matthew Bunn tours the horizon of nuclear dangers.

This introduction to biochemistry explores the molecules of life, starting at simple building blocks and culminating in complex metabolism.