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Empowering Everyday People to #BeTheChange

Important Update

July 2024 Announcement:


Green Team Academy will not be hosting a facilitated International Climate Action Challenge this year due to limited staff and resources. 

Our next challenge will kick off in August 2025.

Subscribe to our newsletter to be the first to know about upcoming opportunities! 

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Welcome to the Green Team Academy

Where grassroots movements come to grow!

Green Team Academy is a fiscally sponsored nonprofit organization headquartered in Denver, Colorado, and operating internationally. Our philosophy is rooted in the power and wisdom of a grassroots approach to change. We have worked with individuals and local organizations around the world to build stronger, healthier, resilient, and sustainable communities. We do this with our International Climate Action Challenge (ICAC).

Message from Joan Gregerson

We empower everyday people to #BeTheChange through our two signature programs: Earth Week Summit and International Climate Action Challenge. 

Hear more from founder and director, Joan Gregerson.

Our Impact

We help everyday people launch their eco-initiatives in our 90-day International Climate Action Challenges.

We've had the honor to work with change-makers around the world!







Watch & Subscribe on YouTube

Check out our challenger stories, featured interviews, and more

on the Green Team Academy YouTube Channel!

What Our Challengers Accomplished
During the 2020 - 2022 International Climate Action Challenges

Challenger Stories

What happens during our annual International Climate Action Challenges? A lot!

Read real-life stories of everyday citizens who turned their eco-project ideas into reality in just 90 days.

I was introduced to the Action Plan and learned that I do not have to be an expert in order to start a project. The challenge helped us make a big impact faster than if we had gone at it alone.
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Darwin Malwele

Earth Guardians, Zambia

How You Can Participate

Challengers are the driving force behind our impact, but the International Climate Action Challenge would not be possible without our supporters.


Be a Tree Hero, Make a donation. Every dollar helps make the event happen. We'll plant a tree in your name for every $25.

Donate Today


Organizing this event is no small job, and it is done entirely by (virtual) volunteers. If you have time and skills to share, join us!


You amplify our impact, we amplify your brand message. Together we empower everyday people to #BeTheChange.

2022 Impact Map

Green Teams Around the World

View Green Teams that participated in Green Team Academy's 2022 International Climate Action Challenge. Click on the pin to learn about each team and see how they created a positive impact in their community.

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