Please find a list of 40+ free online green courses divided into several categories:
I SUSTAINABLE DEVELOPMENT AND ENVIRONMENTAL MANAGEMENT
Offered by: SDGacademy
Level: Intermediate
Global Environmental Management
Offered by: Technical University of Denmark
Level: Intermediate
Environmental Protection and Sustainability
Offered by: Technical University of Denmark
Level: Mixed
Environmental Management and Ethics
Offered by: Technical University of Denmark
Level: Mixed
The Age of Sustainable Development
Offered by: Columbia University
Level: Mixed
Sustainable Development: The Post-Capitalist Order
Offered by: SDG academy
Level: Beginners
The Sustainable Development Goals – A global, transdisciplinary vision for the future
Offered by: University of Copenhagen
Level: Beginner

II CLIMATE CHANGE
Our Earth: Its Climate, History and Processes
Offered by: The University of Manchester
Level: Beginner
Climate Change Science and Negotiations
Offered by: SDG academy
Level: Intermediate
International Climate Change Law and Policy
Offered by: The University of Newcastle, Australia
Level: Beginners
Global Warming I: The Science and Modeling of Climate Change
Offered by: The University of Chicago
Level: Mixed
Climate Action: Solutions for a Changing Planet
Offered by: SDG academy
Level: Intermediate
Climate Change Mitigation in Developing Countries
Offered by: University of Cape Town
Level: Intermediate
From Climate Science to Action
Offered by: The World Bank Group
Level: Beginner
Introduction to Climate Change and Health
Offered by: Yale
Level: Beginner
Climate Change: Carbon Capture and Storage
Offered by: The University of Edinburgh
Level: Beginners
The Health Effects of Climate Change
Offered by: Harvard University
Level: Beginners

III RENEWABLE ENERGY
Global Energy and Climate Policy
Offered by: University of London
Level: Beginner
Offered by: Technical University of Denmark
Level: Beginner
Offered by: The State University of New York
Level: Beginner
Offered by: Technical University of Denmark
Level: Mixed
Biobased Products for a Sustainable (Bio)economy
Offered by: TU Delft and Aachen University
Level: Beginners
Incorporating Renewable Energy in Electricity Grids
Offered by: Imperial College London
Level: Intermediate

IV CIRCULAR ECONOMY
Circular Economy: An Introduction
Offered by: TU Delft
Level: Beginners
Circular Economy: An Interdisciplinary Approach
Offered by: Wageningen University & Research
Level: Advanced
Engineering Design for a Circular Economy
Offered by: TU Delft
Level: Advanced
Circular Economy for a Sustainable Built Environment
Offered by: TU Delft
Level: Intermediate
Sustainable Packaging in a Circular Economy
Offered by: TU Delft
Level: Intermediate
Circular Economy – Sustainable Materials Management
Offered by: Lund University, EIT Rawmaterials and others
Level: Beginner
Circular Economy of Metals: Towards a Sustainable Societal Metabolism
Offered by: Universiteit Leiden
Level: Beginner
Waste Management and Critical Raw Materials
Offered by: TU Delft
Level: Beginner
Offered by: The World Bank Group
Level: Beginners
V GREEN BUSINESS AND ECONOMY
Corporate Sustainability. Understanding and Seizing the Strategic Opportunity
Offered by: Bocconi
Level: Mixed
Offered by: The Hong Kong University of Science and Technology
Level: Beginner
Managing Responsibly: Practicing Sustainability, Responsibility and Ethics
Offered by The University of Manchester
Level: Mixed
Offered by: IESE Business School, University of Navarra
Level: Beginner
Greening the Economy: Lessons from Scandinavia
Offered by: Lund University
Level: Beginner
Introduction to Sustainable Finance
Offered by: UN
Level: Beginners
Essential Tools for the Low Carbon Economy
Offered by: The University of Queensland, Australia
Level: Beginners
Driving business towards the Sustainable Development Goals
Offered by: Erasmus University Rotterdam
Level: Beginner
The Transition to the Decarbonised Economy of Tomorrow
Offered by: TU Delft
Level: Intermediate
VI SUSTAINABLE CITIES
Greening the Economy: Sustainable Cities
Offered by: Lund University
Level: Beginner
Co-Creating Sustainable Cities
Offered by: TU Delft, Wageningen University & Research
Level: Advanced
Offered by: TU Delft, Wageningen University & Research
Level: Intermediate
VII POLLUTION
Air Pollution – a Global Threat to our Health
Offered by: University of Copenhagen
Level: Beginner