Business Culture Change


Every Friday at 11am, colleagues meet for 11 minutes to talk about climate and to show solidarity with the youth climate strikes. Join in: #11at11ClimateStrike on Twitter.

Community Learning

CAT Salon

Informal discussion-based events to learn about a climate topic and share experiences and potential actions to take. View presentations on YouTube.

Community Learning

Knowledge Management & Information Sharing

We’re using Outline to collect information and publishing Action Guides and blog posts to help others take action. Please see #announcements for updates. If you’re part of our Slack community, you can log in with your details and view Outline here.

Industry Thought Leadership

Branch Magazine

An online magazine written by and for people who dream of a sustainable and just internet. Produced in collaboration with EIT Climate KIC, Mozilla Foundation, Green Web Foundation. Issue 2, Spring 2021 is out now! Read issue 2.

Community Networking


Looking to meet some fellow climate-conscious technologists? Join us in our #cat-roulette Slack channel to get paired up with a randomly selected CAT every two weeks.

Past Projects

#LetsGreenTheWeb Together

Industry Engagement

#LetsGreenTheWeb campaign

The #LetsGreenTheWeb campaign is a focused, 5 day Twitter campaign to encourage and support everyone to measure the carbon emissions of websites and share tweets highlighting the results. Find out more.

Industry Thought Leadership

The tech industry can be both a cause of climate change and a solution. How do we transition our sector to be more sustainable and, at the same time, help transition the world to be more sustainable? Watch now.

Corporate Engagement

Digital Climate Strike

CAT members contributed to the digital ‘green out’ campaign for businesses to show solidarity with the Youth Global Climate Strike. Over 10,000 websites joined, generating 38% of traffic to the Global Climate Strike website, and 30K+ additional signups [source].