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Electric Cars a Mixed Bag For Health, Climate

New study shows that electric vehicles' environmental friendliness depends on where the electricity comes from.

Trillions and Quadrillions: Numbers Tell U.S. Energy Story

New interactive map shows how energy production in U.S. has grown since 1993.

West Coast States Rule Electric Vehicle Adoption in U.S.

State mandates and tax incentives make California the most popular state for buying an electric car.

Low Oil Prices May Bode Ill For Climate

Low oil prices means people will drive more and buy less efficient vehicles, increasing CO2 emissions.

‘Nuff Said: CO2 Emissions Plan Moves to Next Step

The Obama administration's plan to cut CO2 emissions moves to next step.

Pipeline Crunch Could Keep Northeast’s Heating Bills High

New Yorkers and Bostonians will pay higher natural gas prices this winter because of a pipeline crunch.

What’s At Stake in Lima Climate Talks

Negotiators are about to gather in Lima to thrash out the details of the first post-Kyoto climate treaty.

This Is How the U.S. Power Grid Works

As part of "Grid Week" in mid-November, the U.S. Department of Energy shows how the power grid operates.

Clues Show How Green Electricity May Be in 2050

How people get their electricity and where it comes from is on the brink of major change in the U.S.

Report Maps Out Decarbonization Plan for U.S.

The U.S. is technologically able to kick its fossil fuels addiction by 2050, report says.

World Needs to Mind the Carbon Emissions Gap

The global effort to address carbon emissions is a start but it's not enough to avoid dangerous warming.

Post Climate Pact, IEA Warns Fossil Fuel Trends Dire

Despite gains in renewables, the world is still on dangerous energy-related emissions path, IEA warns.

LEDs the Fast-Rising Heroes of Efficiency

LED bulb efficiency has risen sharply in 2014, making them among the most efficient lights available.

UN Climate Report Rings Alarm, Offers Guidance

IPCC analysis of climate change has painted an ugly picture, but it also offers hope and guidance.

Cities Designed like Ecosystems Offer Untold Gains

For too long we have ignored the relationships between built and natural environments.

Massachusetts, California Lead U.S. In Energy Efficiency

Massachusetts and California lead the U.S. in energy efficiency, according to annual ranking.

LEDs are a Bright Idea Whose Time Has Come

LEDs could help slow global warming and illuminate the developing world. Now that's worth a Nobel Prize.

The Fuel You Use For Heating Depends on Where You Live

How you heat your home depends a lot on where you live, and it has implications on your carbon footprint.

The $90 Trillion Climate-Stabilizing Cookbook

A new report shows how the world could become wealthier by spending more on clean energy infrastructure.

China Works Toward Kicking its Coal Habit

The world's biggest greenhouse gas emitter might be getting serious about kicking its coal habit.

Gallery

Arctic Sea Ice Thinning: Fall Fall view: Arctic sea ice has been getting thinner, even faster than its area has been shrinking

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