Celebs urge rich nations to "tackle climate change"

As always, celebs are falling over themselves to appear hip and PC, and like nothing more than publicly exposing their green credentials (although most of us would wish they'd cover them up again):

In a letter to The Times, 19 signatories including broadcaster David Attenborough, actress Scarlett Johansson and singers Missy Higgins and Annie Lennox said developed nations must "show leadership" at UN climate talks in Poznan, Poland this week.

Don't know about you, but I'm convinced.

Read it here.