There is growing concern about the impact that we are having on our climate through greenhouse gases such as carbon dioxide.

The Carbon Footprint website allows you to calculate how much carbon dioxide you and your family produce and then suggests simple ways of reducing your carbon footprint.

Every year millions of tons of the plastic that we throw away ends up in the world's oceans, doing serious damage to marine wildlife. The Natural Resources Defense Council has produced a list of ten ways in which you can help to tackle the problem.