Activist sign banners with environmental messages during a climate change walk prior to delivery to Prime Minister Manmohan Singh"s office in New Delhi on Saturday, 12 December 2009. Prime Minister Singh is to attend the climate summit in Copenhagen along with a galaxy of world leaders including US president Barack Obama.

Photographer: A Sarthak

Tags: DemonstrationProtestClimate WalkWalk for ClimateNewsBombayPhoto Stock