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This online lecture series examines classical and modern developments in graph theory and additive combinatorics, with a focus on topics and themes that connect the two...

This course teaches how to program in R, which is a popular language used by data scientists and researchers.

This online lecture series reviews linear algebra with applications to probability and statistics and optimization. It covers linear algebra concepts that are key for...

Free German language app with many short tests to learn "on the go". (Not a video course.)

Free Spanish language app with many short tests to learn "on the go". (Not a video course.)

Free Swahili language app with many short tests to learn "on the go". (Not a video course.)

Free Italian language app with many short tests to learn "on the go". (Not a video course.)

This online course introduces microeconomic concepts and analysis, supply and demand analysis, theories of the firm and individual behavior, competition and monopoly, and...

This course encompasses the study of eating as it affects the health and well-being of every human. Topics include taste preferences, food aversions, the regulation of hunger...

This course explores the causes, course, and consequences of the American Civil War, from the 1840s to 1877.

This course shows the basics of SQL data analysis to explore dips and spikes in data and build business metrics.

This online course gives an introduction to artificial intelligence and deep learning for programmers.

This video lecture gives an introduction to ceramics.

This online lecture series offers a broad survey of modern European history, from the end of the Thirty Years' War to the aftermath of World War II. Along with the consideration...

This course teaches how to program in Ruby, a flexible language used to create many websites.

This lecture series addresses questions related to the foundations of Quantum Mechanics. Topics include: Bell´s inequalities and Entanglement, Measurements, Decoherence and the...

This online video lecture provides a historical study of the origins of Christianity by analyzing the literature of the earliest Christian movements in historical context,...

Free Esperanto language app with many short tests to learn "on the go". (Not a video course.)

This short online course is designed for engineers, scientists, medical personnel, managers, and others who work with lasers and/or fiberoptics, or who anticipate working with...

Khan Academy provides various free introductory biology video lessons. Topics include acids and bases, properties of carbon, macromolecules, energy / metabolism, enzymes, cell...