Defining The Decade - A Googling We Go

Edward Stourton tries to make sense of a decade in which history has been put on fast forward. There has been a revolution in the way we communicate, widespread alarm about the planet's very survival and a challenge to the world order. What does it mean for the way we live as we head into 2010? The impact of the internet - dreamt up by visionaries, embraced by commerce and full of (not always welcome) surprises.