It's all very well saying we're taking steps to reduce our carbon emissions, but it will mean nothing to you if you don't know what effect carbon (and the other greenhouse gases that get lumped in with it) have on the environment in the first place.

The truth is carbon actually plays a very important, and positive role in sustaining our climate. The problem is however, that if the level of carbon in the atmosphere becomes too high, its role becomes far more negative. Check out the slideshow below to learn more.