1. The Greenhouse Effect - how the sun's visible light is converted into trapped infra red light and heat, causing the planet to warm up.
2. The Ozone layer - what is Ozone? where is the Ozone layer? How does it protect us from harmful UV light.
Explanations showing animated diagrams of the earth demonstrating the global size of the processes involved. Also find out what's going on at the molecular level and how these two completely different length scales are related.
Please ensure you view this PowerPoint as a show to see the animations.