The Great Climate Changing Debate: Introduction

The protection of the environment is now firmly a mainstream consideration in all our lives. Engineers are currently examining geo-engineering as one of a number of ways to tackle climate change, There are five types of geo-engineering; ideas include removal of CO2 from the earth's atmosphere with air-scrubbers, reflecting solar radiation back into space with space mirrors, artificial oceanic algal blooms to absorb CO2, mass re-forestation and artificial cloud cover. What are the challenges of geo-engineering, and does the "law of unintended consequences" mean that we may do more harm than good? This presentation introduces a public debate bringing together a leading panel of climate experts, focusing on geo-engineering, to highlight the urgency to act on climate change before it is too late.