Rated 5 out of 5 - Learnify X Webflow Template

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 Waitlist

Starts August 29, 2026

Text reading 'School of Climate Action Design' in a soft, glowing script style.

Gradient background transitioning smoothly through green, yellow, orange, red, purple, and blue hues.

Hey, Climate Leader 👋
You might be making these common mistakes about what actually motivates your community to change.

Illustration depicting that knowledge plus caring plus money does not motivate action, showing brains with glasses reading, holding a heart, and holding coins, with a sleeping brain below.

Illustration showing two cartoon brains with stressed expressions labeled 'Cognitive Load' and 'Bad Choice Architecture' with a note that these kill climate engagement.

Illustration highlighting three systems required to scale a movement: a brain holding a light bulb near a funnel labeled 'Funnel', a brain holding hands with a smiling heart labeled 'Social Influence', and a brain gesturing near a feedback icon labeled 'Feedback Loop'; text reads 'And missing the systems required to scale a movement = Systems to Scale'.

master the principles of scaling 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.

Join the waitlist

Hand holding a fan of colorful behavior mapping cards in front of a blue card kit box titled 'Behavior Mapping for Climate Action.'

Get 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

Live Support & The Community You Need

Four user icons connected by arrows forming a circle around two overlapping speech bubbles, symbolizing communication and collaboration.

Community

Join a community of world-leading climate and sustainability managers.

White line icon of a female video chat in a browser window on an orange circular background.

Weekly Live Calls

Live Q&A with Katie and expert brains-trust to problem-solve and get feedback.

Two white speech bubbles with three dots inside each, on a yellow circular background.

Instant Support DM

DM Katie and other expert environmental psychology mentors for advice, questions, and feedback.

White silhouette of a sun setting over water with clouds, inside a green circular background.

Lifetime Access

No recurring fees. Get lifetime access to the courses, downloads, and community.

White line drawing of three people sitting and connecting arms over an oval table on a green circular background.

Support Pods

Upon joining, you'll be assigned to a pod of 4 to 5 other members to provide weekly accountability, friendship, and ideas.

Icon of a certificate or document with a ribbon seal on a blue-green circular background.

Certificate of Graduation

Submit your action-optimized project upon completion to receive your official hard-copy graduation certificate from Hello World Labs.

What sustainability leaders are saying

Portrait of a man with light brown hair wearing a dark suit, blue shirt, and red tie against a pink background.

Ian Fletcher

Industrial Policy
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.

Close-up of a smiling man with a beard wearing reflective aviator sunglasses against a blue background.

Marc O'Brian

Co-Founder
Climate Designers

I highly recommend Katie’s workshop if you are someone who wants to actually see measurable impact in the work you are doing. I'm excited to see more of what she creates.

Smiling middle-aged woman with blonde hair against a yellow background.

Veslemøy Klavenes-Berge

Fellow
Climatebase

Extremely hands-on and concrete for people who want to get started on their world changing ideas. It made a huge difference in the way I think about how to do stuff that really matters. I always come back to Katie’s process when I feel that I'm being derailed or stuck.

Smiling bald man with a mustache wearing a dark suit, blue shirt, and striped tie against a blue background.

Jordan Daniels

Director of Sustainability
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.

Portrait of a smiling woman with long light brown hair and blue eyes, standing outdoors with green foliage in the background.

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.

Smiling woman with long black hair wearing a green jacket against a bright pink background.

Sanjana Paul

Executive Director
Earth Hacks

Katie does an incredible job of introducing concepts in a way that naturally allows you to engage with them. I’m also a huge visual learner, so the presence of a lot of images made this a really enjoyable read for me. Highly recommend!

Smiling man with short dark hair and glasses wearing a dark vest and shirt against a pink background.

Eugene Otto

Software Engineer, Game Programmer and founder

My background is in software engineering, and although I've applied one or two of these gamification techniques in the past, I've never seen them all tied together in such a logical and repeatable design. The lessons are captivating, and move at a fast but comfortable pace.

Smiling middle-aged man with gray beard wearing a light blue blazer and white shirt against a blue background.

Tim Bennett

Consultant to UN Centre for Alleviation of
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!

Apply to Join

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.

Simple cartoon illustration of a small yellow chick facing left.

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.

Simple round clock showing 10:30 with orange hands on a beige face and dark brown background.

Real-time data

Real-time displays showing kWh got households to cut energy consumption by 8%.

Stacks of green paper currency with a white band around one stack.

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.

Two smiling faces, one blue and one orange, with yellow lines indicating a cheerful connection.

Social imitation

The EPA's mandatory disclosure of toxic chemicals caused a 45% reduction in chemical use over five years.

Traffic light with red, yellow, and green lights from top to bottom.

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.

Icon of a notepad with two orange lines and a large pencil in front.

Commitment

Asking people to write down a pledge and posting it publicly increases a person's retention to that commitment by 74%.

A red and white target with an arrow hitting the bullseye.

Goals

Asking pilots to achieve a specific fuel-saving goal got aircraft to reduce fuel use by 12%.

Simple illustration of a house with red roof, orange door, window, and green bushes in front.

Moving house

People are 27% more likely to take on a new green behavior after they move house.

Location pin icon over a simplified green map on a teal and beige background.

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.

Three illustrated people sitting together and smiling, with abstract colorful shapes in the background.

Block leader programs

Meta research shows that neighbor block leader programs are more influential than any other mechanism at encouraging conservation behavior.

Illustration of a smiling pink sun behind a sad blue rain cloud with raindrops.

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.

Woman with blue eyes and pink lipstick wearing a pink tie-dye hoodie against a yellow background.

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!

Collage of images showing hands composting vegetable scraps, people planting a tree, a group brainstorming over a mind map, volunteers in green shirts discussing, and individuals picking up trash outdoors.

Hey, Climate Leader 👋 You might be making these common mistakes about what actually motivates your community to change.