Environment

The river enters Delhi relatively clean but by the time it flows out, it's a "toxic cocktail of sewage, industrial waste and surface runoff," says an environmentalist. Urbanization is partly to blame.

As the climate change debate rages, leaders in Miami Beach, a city that routinely floods, are tackling sea-level rise head on by raising roads and seawalls and installing new storm sewers and pumps.

In a blow to the coal industry, a new terminal in the Pacific Northwest was denied approval after opposition from environmental groups and a debate between local Native American tribes.

Is it possible to shrink the carbon footprint of the dead? An organization wants to persuade Indians to adopt "green" cremations and make an important Hindu death rite more environmentally friendly.

In the Indian capital of New Delhi — the city with the most polluted air in the world — exercising outdoors is as good for your lungs as chain smoking. A triathlete explains why he keeps at it.

How does a country bring its people into the 21st century without pumping huge amounts of carbon into the atmosphere? This challenge is more acute in India than anywhere else.