The Humanure Bank, Aquatron Separator

CAT is an educational charity dedicated to researching and communicating positive solutions for environmental change.

We speak to government and campaigners about policies that would help create a zero carbon Britain; we train students in all aspects of sustainability; we help schoolchildren to understand the importance of action on climate change; and we give advice to householders on what they can do in their own homes.

Will you help create change?

Will you join us today and become part of the change?

  • Visit us to learn about solutions that could work for you in your own home
  • Gain new skills on one of our short courses in renewable energy, green building, sustainable growing and more
  • Study with us for an environmental Masters degree
  • Support our work by becoming a member or making a donation today


An interesting film that CAT has made that shows the benefits of Aquatron.

CAT Centre for Alternative Technology



CAt Centre for Alternative Technology




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