The apocalyptic film is fiction, but the fact is that climate change is happening right now. The Wiltshire Wildlife Trust believes that unless we take action we face the risk of drought, flooding, heatwaves and the devastation of our wildlife here in Wiltshire and around the globe.

Scientists believe a key contributor to our changing climate is the emission of greenhouse gases such as carbon dioxide (CO2) into the atmosphere. About 25% of all carbon dioxide emissions come from the energy we use in our houses. The good news is that we can all help prevent climate change by cutting the energy we waste.

"In the UK we waste £96 million of energy every week, which adds up to a lot of carbon dioxide. Climate change is now a reality - 'The Day After Tomorrow' is here today and we all need to do our bit to reduce our impact on our planet. Simple actions like turning off the light when we leave a room or boiling only the correct amount of water for a cup of tea all add up," explains the Trust's Energy Projects Manager Jo Badham.

"Things you can do to reduce your carbon dioxide emissions include installing cavity wall insulation and low energy lightbulbs, but many measures won't cost you a penny. Phone the Energy Efficiency Advice Line, based at the Trust, on 0800 512012 to find out more," says Jo.

One thing you can do is join the Wiltshire Wildlife Trust's Switch On Energy Club. It is free to join and members can get exclusive discounts of up to 45% on cavity wall and loft insulation. Further discounts are available on radiator panels, energy efficient light bulbs, and solar powered products such as garden lights.

"Small actions by many people can add up to a fantastic change for the better," says Jo.