Sustainability isn’t a new concept, but it’s definitely one of the biggest buzzwords going around today. From finding ways to “go green” at home to learning new ways that your company can reduce energy costs, it’s absolutely essential that you understand the concept of sustainability and how it impacts future generations.

The International Institute for Sustainable Development defines sustainability as, “development that meets the needs of the present without compromising the ability of future generations to meet their own needs.” Businesses all around the world are beginning to realize the importance of sustainability and investing in sustainable solutions.

If you’re looking to expand your knowledge about sustainability and other related topics – such as climate change – what better way to do it than online? Here, we list out five free online courses that will teach you how your company can be more sustainable.

Introduction to Sustainability (University of Illinois at Urbana-Champaign)
Regardless of whether you’re new to the concept of sustainability or you just want to brush up your knowledge, this course can teach you a lot. There are eight modules, each of them varying in lengths from 40 minutes to three hours. You’ll learn about how today’s society can endure in the face of global change, ecosystem degradation, and resource limitations.

The Age of Sustainable Development (Columbia University)
If you already know all the basics of sustainability and are looking for more in-depth information about the key challenges and pathways of sustainable development, check out this course from Columbia University. It’s compromised of 14 different different modules, which are approximately two hours (or less) each. If sustainability is a huge part of your job, this course is a great opportunity for you to expand your knowledge of sustainable development.

Managing Responsibility: Practicing Sustainability, Responsibility, and Ethics (The University of Manchester)
Plant and sustainability managers are frequently confronted with issues of sustainability, corporate responsibility, and ethics. This course is perfect for anyone who is looking for ways to make their company more sustainable and reduce energy costs. The curriculum includes information on responsibility management, sustainability, responsibility, and ethics.

Climate Change in Four Dimensions (UC San Diego)
This 10-week course requires about five to seven hours of dedication a week, but it’s well worth the investment. It views climate change from a variety of different perspectives and examines everything from the basics of climate change all the way to the impact on our planet as well as what we can do to help.

Climate Change (The University of Melbourne)
Climate change is complex – and this course from The University of Melbourne recognizes that. This course offers you an introduction to the different perspectives on climate change and how it affects you as an individual, community member, and a citizen of the global community. By the end of the course, you’ll have a better understanding of what climate change is and what you can (and should) do about it.