It's often on road trips that you start to grasp the full extent of climate change, whether it's witnessing the damage sandmining does to rivers, or getting a sense of the smog in North India.

The smog isn't a local Delhi problem — blankets villages and towns all the way down the highway to Rajasthan.
Hearing from friends that pollution is creeping up the Himalayas too. We can see the air, feel how bad it is; I wonder about the soil, and how the earth's contamination is affecting all of us.