The Week: Havas joins climate battle

Havas has joined forces with the former United Nations secretary-general, Kofi Annan, and Bob Geldof, to launch a global climate change campaign.

Annan, now the president of the Global Humanitarian Forum, launched the new campaign in Cannes last week. Created by the Havas network Euro RSCG, the "tck tck tck: time for climate justice" campaign urges people around the world to join an online petition to push for action on climate change. Geldof will back the campaign by recording a new version of the Midnight Oil song Beds Are Burning.