Scarlett Johansson has been approached by politician-turned-environmental activist Al Gore to help promote his forthcoming Live Earth gigs.

The actress was contacted by the climate-change philanthropist during a ten-day visit to Asia with charity Oxfam earlier this year, with Gore leaving a message on her mobile phone to request her support.

The series of green-themed global events will take place on 7 July, featuring performances from Madonna, Crowded House and The Police in a host of cities including London, Rio de Janeiro, Sydney and Tokyo.

This could work. I know if Scarlett Johansson was around, I would try to hold in my farts, and that would help stop global warming.