2. A carbon footprint is a measure of the impact our activities have on the environment, and in particular climate change. It relates to the amount of greenhouse gases produced in our day-to-day lives through burning fossil fuels for electricity, heating and transportation etc. The carbon footprint is a measurement of all greenhouse gases we individually produce and has units of tonnes (or kg) of carbon dioxide equivalent.

4. Ditch bottled water. Bottled water has a huge carbon footprint. Try buying a reusable water bottle or canteen for your water. Many plastic water bottles are recycled, but most are not, making the footprint even bigger. The Three Rs: Reduce, Reuse, Recycle. Buy organic and local. When possible, buy organic or "fair trade." There's a better chance the food was grown in an eco-friendly way, and if it's locally grown, it didn't have to travel that far. Use energy saving light bulbs Replace your old fridge / freezer (if it is over 15 years old), with a new one with energy efficiency rating of "A" Don't buy over packaged products Unplug Unplug appliances that you don't use frequently. Most electronics have a standby mode. Try using a power strip for groups of electronic items. One flick of the switch and it's all off.

6. - Studies have shown up to 30% of the difference in miles per gallon (MPG) is due to driving habits alone. You could save more than a ton of CO2 per year by: - Accelerating slowly and smoothly - Driving the speed limit - Maintaining a steady speed - Anticipating your stops and starts

7. "Carbon Footprint - Calculator your CO2 generation and how it affects the environment." EnviroDuck: Learn to be green and help our environment. N.p., n.d. Web. 4 Jan. 2012.. "Carbon Footprint - Home of Carbon Management." Carbon Footprint - Home of Carbon Management. N.p., n.d. Web. 4 Jan. 2012.. "Free Carbon Footprint Calculator | The Nature Conservancy." Nature Conservancy | Protecting Nature, Preserving Life. N.p., n.d. Web. 4 Jan. 2012.. "Individual Emissions - Household Emissions Calculator | Climate Change - Greenhouse Gas Emissions | U.S. EPA." US Environmental Protection Agency. N.p., n.d. Web. 4 Jan. 2012..