In the U.S., an energy-efficient home has become something of a luxury good.
Personal climate-control systems could be more energy efficient than keeping entire rooms at a single temperature.
The cold water of the deep sea may be an ideal environment for server farms.
The first step is figuring out how to make Martian concrete.
It might save you from food poisoning.
The international shipping and aviation industries likely won’t be affected by COP21, even though they emit as much carbon as some large nations.
The government has delayed an auction of public land for oil and gas development until after the Paris climate talks.
The world hasn't yet figured out how to deal with people who were forced from their homes for environmental reasons.