Indians hold hands to form a human chain on the banks of the Ganges Rives urging authorities to clean up the river for the upcoming over-a-month-long Mahakumbh fair in Allahabad, India, Sunday, Dec. 2, 2012. Millions of Hindu pilgrims are expected to take part in the largest religious congregation on the banks of Sangam, the confluence of rivers Ganges, amuna and mythical Saraswati, during the festival in January 2013, which falls every twelfth year. (AP Photo/Rajesh Kumar Singh)