CAUSES

Thanks to the greenhouse effect, Earth is a thriving place; unlike Mars, which is pretty much frozen and dead. But when the level of greenhouse gases in our atmosphere becomes so high that the planet shows signs of overcooking, we know there’s a serious problem.
THE PROBLEM
- We burn fossil fuels such as coal, oil, and natural gas
to generate electricity.
- Transportation - cars, trucks, aviation - requires fuel. The fuel
burned emits greenhouse gases.
- Industrial practices—like the Alberta tar sands—pump out
serious greenhouse gases.
- Modern-day agriculture contributes to deforestation while
emitting massive amounts of greenhouse gases.
Source: Stern Review
Take a look, and see how those factors snowball into a whole heap of other causes...