Tutu, Klein and Chomsky call for mass climate action ahead of Paris conference

Artists, journalists, scientists and academics among 100 signatories calling for mobilisation on scale of slavery abolition and anti-apartheid movements

Desmond Tutu, Vivienne Westwood, Naomi Klein and Noam Chomsky are among a group of high-profile figures who will issue a mass call to action on Thursday ahead of the UN's crunch climate change conference in Paris in December.

They call for mass mobilisation on the scale of the slavery abolition and anti-apartheid movements to trigger "a great historical shift".