Calderdale Badger Protection Group
- Information about membership and their activities, with background on the badger and relevant legislation.
- http://www.calderdalebadgergroup.co.uk/

Treesponsibility
- Voluntary group empowering people to take responsibility for their own carbon dioxide emissions through tree-planting, and bringing back lost woodlands and hedgerows. Details of activities and for contact.
- http://anderson.ath.cx:8000/treesponsibility/

Calderdale Sustainability Forum
- An umbrella body of organisations, groups and individuals in Calderdale concerned with promoting sustainable development. Information about activities, with directories of resources, and a diary.
- http://www.sustainablecalderdale.org.uk/

Calderdale Climate Challenge
- Information about local initiatives to combat climate warming, in businesses and schools. Includes a newsletter, forum, and details of their talks service.
- http://www.calderdaleclimatechallenge.org.uk/

Calder Future
- A partnership to improve the River Calder in West Yorkshire, its tributaries and bankside.
- http://www.calderfuture.org.uk