There are a few more FREE course offered.
https://plus.columbia.edu/course-catalog
AI for Business
Columbia Engineering
Learn the techniques for integrating Artificial Intelligence (AI) into business in this course designed for business executives, managers and IT specialists.
Machine Learning for Environmental Engineering
Columbia Engineering
Explore and test state-of-the-art machine learning methods applied to environmental sciences and engineering challenges.
The Art of Opinion Writing (limited time; Use code: WRITEFREE)
Columbia Journalism School
Transform your ideas into compelling opinion writing that cuts through the noise and makes an impact.
Introduction to Financial Engineering and Risk Management
Columbia Engineering
Learn the practical applications of financial engineering models, case studies, and industry practices, providing a foundation for further study.
Protecting Children in Humanitarian Settings
School of Public Health
Strengthen your approach to protecting and promoting the wellbeing of children in humanitarian settings using the latest evidence on childhood adversity and drawing on experiences from child protection practitioners.
The Civil War and Reconstruction 1850–1861: A House Divided
Arts and Sciences
Discover how the issue of slavery came to dominate American politics, and how political leaders struggled and failed to resolve the growing crisis in the nation.
Wage Work for Women Citizens: 1870-1920
Arts and Sciences
Develop a deeper understanding of women's work and independence in the late 19th century, and how it was influenced by gender and politics in this second part of the "Women Have Always Worked" series.