A glimpse into U2’s collective carbon footprint from Helen Roberts of carbonfootprint.com has sparked controversy among environmentalists.

This year the world-renowned band’s tour (from 44 shows) is reportedly emitting the equivalent carbon footprint of a return flight to Mars. According to guardian.co.uk U2 will create enough carbon to fly all 90,000 people attending one of their Wembley dates (in London) to Dublin. Hmm, but isn’t Bono supposed to be somewhat of an environmentalist?

What can you do to lighten your own ‘entertainment footprint’?