Saving energy
There are many many ways you can save energy. This can save you money and help reduce CO2 emissions. I will focus here on things you can do for yourself as a DIYer.

http://www.nef.org.uk/
The national energy foundation is a independent educational foundation.

loft insulation
tank and pipe insulation
aluminium radiator panel
draught proofing doors
draught proofing casement windows
draught proofing sash windows
low energy bulbs
saving water
saving water in your home
saving water in the garden
How to make your home more energy efficient
Can you set up your own Solar Panel installation?
Office Space