greenhouse gas emission

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A Small Number of People Are Causing a Huge Share of Our Greenhouse Emissions

Blame their big houses and outsized driving habits.

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In the Climate Change Economy, It's About Efficiency, Not Just Growth

North American cities are producing substantially less wealth per ton of greenhouse gas emissions than their European counterparts.

Sara Johnson

Are Food Trucks Worse for the Environment Than Storefronts?

It's not easy to compare them, but we're giving it a shot.

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Can We Please Stop Pretending Cars Are Greener Than Transit?

Freakonomics revives a tried, and tired, debate.

Hestia Project

Watch a City Aglow in Greenhouse Gas Emissions

Researchers at Arizona State University have created software that tracks carbon dioxide emissions of whole cities, down to individual buildings and roadways.

Reuters

When It Comes to Cutting Carbon, Cities May Be More Powerful Than National Governments

Mayors have direct control of 75 percent of emission sources in their cities, according to a new report.

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A Streetlight Powered by Algae: Is This Actually Possible?

The French biochemist behind this strange green light sees it having a "massive" palliative effect on global warming.

Reuters

Why Bigger Cities Are Greener

Denser, more populous cities are more energy efficient than their smaller counterparts.

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The Climate Plans That Aren't Helping Reduce Greenhouse Gas Emissions

A new study finds citywide plans are not as effective as smaller-scale initiatives.

Reuters

Finding the Route of Least Emissions

Experts are working on models that would bring green-routing to your GPS