Free Courses

An in-depth look at the 1854 London cholera epidemic in Soho and its importance for the field of epidemiology.

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

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.

How can we eradicate malaria? Explore cutting-edge science and technology, and examine policies needed, to control and eliminate malaria.

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

Mobilize people to tackle tough problems and build the capacity to thrive through the dangers of change

Equipping clinicians with an up‑to‑date, comprehensive understanding of stem cell–based approaches for Parkinson’s disease, including biological rationale, current trial outcomes, comparison with existing therapies, and guidance for evidence.

This course examines the Sikh scripture from a doctrinal and historical perspective by providing an overview of Sikh teachings as well as the historical context within which the scripture evolved and became canonized.

Learn about Claudio Monteverdi’s L’Orfeo, one of the first operas ever written.

An introduction to the study of bioethics and the application of legal and ethical reasoning.

Join Harvard Medical School faculty Dr. Luana Marques to use applied psychology to build personal resilience with five science-driven skills.

Explore the reunification of China under the Tang with a focus on aristocratic culture — from poetry to calligraphy to literature.

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

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 probability, an essential language and set of tools for understanding data, randomness, and uncertainty.

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

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

An introduction to basic statistical concepts and R programming skills necessary for analyzing data in the life sciences.

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

Understanding the context for the Ebola outbreak: What went right, what went wrong, and how we can all do better.

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

Learn how early American politics informed the U.S. Constitution and why its promise of liberty and equality has yet to be fully realized.

Explore the underlying structures of everyday arguments and develop the tools to communicate effectively.

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

Learn how to use R to implement linear regression, one of the most common statistical modeling approaches in data science.

Join Harvard faculty in this online course to discover the physical history of the Jewish bible.

Take your introductory knowledge of Python programming to the next level and learn how to use Python 3 for your research.

Learn how American women created, confronted, and embraced change in the 20th century while exploring ten objects from Radcliffe’s Schlesinger Library.

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