Zero emissions? That depends on where you get the electricity to charge your car.

Visionary architectural concept from Holland, so advanced we don't understand it.

On Earth Day 's 40th anniversary, John Kerry warns that climate change is the environment's biggest hurdle yet.

Sneaker giant ditches the shoebox for a more sustainable alternative.

A Polish architecture firm's visionary concept for a net-zero skyscraper.

New technologies offer promise for expensive process of making saltwater fresh.

But wildlife conservation groups oppose the project, the New York Times reports.

Canadian environmentalist David Suzuki offers his take on the greenness of the games.

Photographer continues his decade-long documentation of our dependence on oil.

Biannual Environmental Performance Index unveiled at the World Economic Forum.