Celebrities including George Clooney, Annie Lennox, Jessica Alba and Colin Farrell are backing charity ONE (co-founded by U2's Bono) for the launch of its Hungry No More campaign.

A new TV ad created by director Jesse Dylan, featuring the stars, aims to draw attention to the famine in Somalia and the 30,000 children who have died in the last three months as a result. Viewers are directed to a petition to ensure world leaders maintain their promise to help prevent hunger disasters in Africa.