Snow. It's fascinating, entrancing, elusive and ephemeral, and a metaphor for life. Exploring my own thoughts, and those of Wilson Bentley and Loren Eiseley on snow.

The Ganges River in India is the most revered and reviled in the world, worshipped by a billion Hindus and reviled by millions because if its horrific pollution. Follow the river 1,600 miles, source-to-sea, in this photo essay.