Earth has always had changeable weather, but now the world's climate is getting warmer. What is global warming, why is it a problem and how can we stop it?
- Most scientists agree that human pollution is partly to blame for an increase in global temperatures.
- Global warming could lead to droughts, floods and severe storms.
- A rise in temperature would cause ice caps to melt and sea levels to rise.
- Greenhouse gases need to be reduced to avert dramatic changes to Earth's climate and ecosystems.