We hear a lot about the size of a person's carbon footprint — how much they use electricity, drive a car, fly on airplanes.
In India, some people are trying to shrink the carbon footprints of the dead.
At least 20 times a day, Braj Kishore Pandey sings a mantra as he lays a human body on a pile of firewood to burn. "There is a request from god for the freedom for the release of the soul, and also for the happiness for the family," he says.
Pandey operates an open-air crematorium by a riverbank outside New Delhi.