Great Thinkers: Points for debate
Content last updated: 09/11/2009
In 1783, toxic gases and sulphuric acid aersols drifted across Britain. The past shows why the UK is still at risk from Icelandic eruptions.
Test your knowledge of the solar system and see if you can save Dallas from blast-off.
David Dimbleby throws down a challenge: Can you use knowledge and research skills to complete the Seven Ages Quests?
