Earth has warmed by about 1ºF (a little under 1ºC) over the past 100 years. But why? And how?

Well, scientists are not exactly sure. The Earth could be getting warmer on its own, but many of the world's leading climate scientists think that things people do are helping to make the Earth warmer.

There's a lot you can learn about global warming. This section provides answers to key questions about global warming, how it occurs, and how you can help to stop the process.

Click here to find out more.