SOOT—also known as black carbon—heats up the atmosphere because it absorbs sunlight. Black things do. That is basic physics.

Governments like to cite external constraints—such as meeting the conditions for an international bail-out—when pushing through unpopular policies.

A couple of months ago a sudden heatwave triggered a fault in the electricity grid in Buenos Aires, leaving the presidential palace, Congress and millions of residents in Argentina’s capital withou

The city of Beijing got worldwide attention last weekend as its readings for air pollution soared to unconscionably high levels, even for the usually smog-smothered residents of the Chinese capital

When the worst drought in 60 years hit America’s corn belt this summer, many people wondered if it was caused by climate change.

The government unveils an ambitious, and expensive, plan to make the power sector greener.

Never let it be said that climate-change negotiators lack a sense of the absurd.

It had been a nervous few days.

THE shale-gas revolution in America has been as sudden and startling as a supertanker performing a handbrake turn.

A painted milestone marks the turn-off to Kailashpur. The slab sports a poor likeness of Gandhi and announces “The Mahatma Gandhi National Rural Employment Guarantee Scheme.