We all love the Cloud. It stores our pictures and emails, it powers our internet searches, and it helps us stream movies and box sets. But out of sight, the cloud depends on processing factories - vast data centres that use enormous amounts of power and water. Every time we go online, we increase its carbon footprint. Richard Bilton investigates the growing environmental problem we're all responsible for.

Starring:

David Dimbleby, Jeremy Paxman, Jeremy Vine, Juliette Lewis, Kirstie Alley, Polly Toynbee

Genre:

Documentary