.avif)
.svg)
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Loved by over 1,000+ sustainability leaders
Design the world’s most effective climate program
Are you a climate leader needing to scale green actions like heat pump insulation, zero waste, or bike riding in your community? Learn how to design the world's most effective climate program in six weeks.
Join the WaitlistStarts Thurday September 17, 2026
.avif)
%20(1).png)
Hey, Climate Leader 👋
You might be making these common mistakes about what actually motivates your community to change.
Revolutionize Your Sustainability Engagement in Six Weeks
A complete operating system to co-design your concepts, marketing, and tools with direct expert support.
Week 1: Ultimate systems design Method that Sandbast Blindspots and unearthes Crystal clear ideas that trigger action
Week 2: The 12-step formula you need to tell your Sustainability story In a way that ignites a movement.
Week 3: Build a proven Six-Step system that grabs attention, fosters engagement, and converts people to take action.
Week 4: Essential principles for when you need to present multiple green options and maintain their follow-through to action.
Week 5: A simple low-tech structure you can apply to any group of people to shift them from “talking” into action gets results.
behavior mapping card kit
The World’s Most Advanced Behavior Design Kit in a Box
Available only to new members of the Climate Action School Community.
Be the first to get your physical card kit mailed to you.
Use Katie's Behavior Mapping for Climate Action Card Kit to get your best ideas and problem solve your trickiest sustainability engagement problems.
The box includes 96 data-driven ways to influence people in a repeatable 10 step formula.
The Theory: World Class Insights From Our Expert Brains Trust
Level up your climate program’s effectiveness with insights, advice, and mentoring from world's leading published researchers.
Dr Florian Kaiser PhD
Professor of Environmental Psychology, Otto-von-Guericke University
Dr Brandon Raynante PhD
Director of Community Engaged Learning in Sustainability at Stanford University.
Dr Daniel Stokols PhD
Chancellor's Professor, School of Social Ecology, University of California, Irvine
Dr Nicole Sintov PhD
Associate Professor of Environmental Psychology, Ohio State University
Dr Taciano Milfont PhD
Professor of Environmental Psychology, The University of Waikato
Dr Joel Ginn PhD
Social and Environmental Psychology Postdoc at Boston College.
Dr Stylianos Syropoulos PhD
Professor & Researcher of Environmental Psychology, Arizona State University
Dr Alessia Dorigoni PhD
Consumer Behavior Neuroscientist, Senior Researcher, University of Trento
Dr Anirudh Tiwathia PhD
Director, Behavioral Science Rare, Center for Behavior & the Environment
.png)
Dr Mona Bielig PhD
Postdoctoral Researcher | Environmental Psychology & Behavioral Science for Policy
University of Konstanz
.png)
Dr Maiken Maier PhD
Postdoctoral Researcher at ETH Zurich | Lecturer | Sustainable Food Systems & Policy
.png)
Dr Thijs Bouman PhD
Associate Professor in Social and Environmental Psychology
University of Gronigen
The Practice: Your Co-design Mentors to Help Bring it to Life
The hands-on team of practical mentors you need to make the elements of your program excellent.
Eric Benson
Associate Professor of Graphic Design
University of Illinios
Educator, designer, author, papermaker, podcaster
.png)
Lindsey Nancarrow
Design Partner for Climate Companies | Behavior Designer ThriveKite
.png)
Giulia May
Community Architect
Helping Online Community Hosts Grow and Monetize their Communities
.png)
Michelle Fox
Creative Director, Brand Strategist, Publication Designer
The Bridge Studio
Live Support & The Community You Need
Community
Join a community of world-leading climate and sustainability managers.
Weekly Live Calls
Live Q&A with Katie and expert brains-trust to problem-solve and get feedback.
Instant Support DM
DM Katie and other expert environmental psychology mentors for advice, questions, and feedback.
Lifetime Access
No recurring fees. Get lifetime access to the courses, downloads, and community.
Support Pods
Upon joining, you'll be assigned to a pod of 4 to 5 other members to provide weekly accountability, friendship, and ideas.
Certificate of Graduation
Submit your action-optimized project upon completion to receive your official hard-copy graduation certificate from Hello World Labs.
What Our Members Are Saying
Ian Fletcher
Industrial Policy
Coalition for a Prosperous America
Coalition for a Prosperous America
This is basically the #1 resource on environmental behavior change now, having set a new standard in this field that makes everything else look either uninspired or obsolete. Technically specific and full of genuinely actionable.
.png)
Kelley Yu • 2025 Action School Graduate
UI/UX Designer
X-Amazon • Masters Student
X-Amazon • Masters Student
The outcomes of the program really exceeded my expectations. After doing Katie's behavior design, I felt very powerful. I can actually get people to do things, and I know it works because I tested it out. I had 30 people sign up, maybe like 15 people actually go through with the whole challenge, and people had a lot of fun. Especially the competition piece. I had a leaderboard, and even the biggest meat eaters were competing to get to the top.
.png)
Angela Vincent • 2025 Action School Graduate
Zero Waste Manager
Stanford University
Stanford University
Highly recommend Katie's Action School for anyone interested in sustainability changemaking! Katie Patrick is an expert on behavior change and breaks down complex topics in an easy (and fun!!) way. This workshop guides you through the steps to implement a program that actually gets people to change their behavior so that we can make climate action real.
Jordan Daniels
Director of Sustainability
In3 Capital Group
In3 Capital Group
Tremendous insights into the psychology of behavior change, backed up with research and real-world examples. I appreciate positive approach: no brow-beating, guilt, or shame - only fun, effective, and uplifting.
Abby Mohan
Marine Geographer, GIS Analyst Climate Pathways
Be motivated instead by a positive vision of how beautiful you think the world could be." Instead Katie turns it into a positive challenge to work on solving with some good advice.
.png)
Jo-Anne Smetherham • 2025 Action School Graduate
Communications Manager
Fossil-Free South Africa
Fossil-Free South Africa
I absolutely loved it. The course was so interesting and so inspiring and so rich. We have these team check-ins every Monday, and every week I'd say, 'There's this thing I learned from Katie Patrick, this is what you need to know.' I have this tremendous desire to teach other people what I've learned, to help them have it in their own work.
.png)
Aneesha Reddy • 2025 Action School Graduate
Sustainability Strategist, Brand Designer, Education Leader
This experience has stayed with me long after it ended. It’s been almost 6 months and I still find myself bringing it up in conversations about climate and behaviour change. The content was truly inspiring and insightful, sharing the most grounded, practical systems, frameworks and tips to move from climate awareness to climate action. Genuinely one of the best experiences I’ve had to learn how to drive climate ACTION!
Tim Bennett
Consultant to UN Centre for Alleviation of
Poverty by Sustainable
Agriculture
Poverty by Sustainable
Agriculture
This course is well designed, beautifully narrated, and crystal clear. Katie presents her material brilliantly and passionately. This is a great opportunity to explore real innovation at the edge of how people are learning and changing behavior. A rare resource and I recommend you get engaged and get it done!
The Evidence
Behavior design is the missing link to effective climate engagement
Public disclosure of data
The EPA's mandatory disclosure of toxic chemicals caused a 45% reduction in chemical use over five years.
Character animals
Characters that show a happy or sad expression depending on energy performance get a 47% better response than a color or number gauge.
Real-time data
Real-time displays showing kWh got households to cut energy consumption by 8%.
Money vs CO2:
Showing energy use in terms of CO2 from electricity gets a 16% better response than showing use in kWh amongst Democrat voters.
Social imitation
The EPA's mandatory disclosure of toxic chemicals caused a 45% reduction in chemical use over five years.
Ambient color
A light that communicates energy consumption using colored LEDs gets people to save 24% more electricity than showing energy use in numerical kWh.
Commitment
Asking people to write down a pledge and posting it publicly increases a person's retention to that commitment by 74%.
Goals
Asking pilots to achieve a specific fuel-saving goal got aircraft to reduce fuel use by 12%.
Moving house
People are 27% more likely to take on a new green behavior after they move house.
Geographically granularity
Comparing people of smaller and more similar groups, such as house vs house, saved 34% more energy than when shown grouping many residences.
Block leader programs
Meta research shows that neighbor block leader programs are more influential than any other mechanism at encouraging conservation behavior.
Guilt vs pride
Showing people their environmental performance is below average (guilt) gets a better response than showing people they perform above average (pride).
Meet Your Host,
Katie Patrick
Environmental Engineer, Author, Podcast Host, TEDx Speaker, and Chief Action Designer at Hello World Labs.
Hello, Green Leader 👋🌱,
Do you need to persuade your community to sign up and take action? I can help. I've spent 20 years creating:
🌈 Engagement tools for big organizations like UNEP, NASA, Stanford, and Google.
📊 Technical dashboards for commercial building portfolios.
🏆 Easy low-tech gamification tools for grass-roots environmental groups.
📧 Funnel systems that have signed up over 100k people to join sustainability causes.
I wrote the world's first book on environmental behavior design and gamification, How to Save the World: How to Make Changing the World the Greatest Game Ever Played – now taught at Harvard University's Sustainable MBA program.
Having graduated from Environmental-Civil Engineering and working on some of the world’s first platinum-LEED-certified buildings, my approach is always evidence-based and quantitative (while still being fun and creative), building from core metrics of feedback loops of environmental data.
About Hello World Labs
Hello World Labs is a design and technology lab specializing in helping sustainability managers develop tools and programs that get audiences to engage and take action.
We take a deeply evidence-based and data-driven approach to encouraging pro-environmental behavior by gathering expertise and insights from world class experts with published peer-reviewed research.
Our specialty is urban sustainability applications including building decarbonization, zero-waste, urban heat, and car-free transit.
For the first time, we've put our signature design process into a community learning platform. Join us!
