carbon dioxide

Earth911 Quiz #23: Drawdown Your Carbon Footprint

Drawdown: The Most Comprehensive Plan Ever Proposed To Reverse Global …

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Earth911 Quiz #21: CO2 Emissions Fact Challenge

Everyday activities — like driving, choosing clothes and food at …

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Earth911 Podcast, July 23, 2018: Sustainability in Your Ear

Peter Fiekowsky, founder and president of The Healthy Climate Alliance, …

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Earth911 Quiz #20: Carbon, for Better or Worse

Carbon is everything to life on Earth, but too much …

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Healthy Climate Alliance: Restore the Climate by 2050

The Healthy Climate Alliance has a bold and achievable plan …

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Gernot Wagner on The Futility of Going Green and the Economics of What Really Matters (Podcast)

If bringing your canvas bags to the grocery store, carpooling, and forgoing double cheeseburgers makes you feel good about yourself, terrific. But don’t expect the planet to notice. What the world needs, says Environmental Defense Fund economist Gerno…

Amazon Drought Released 1.8 Billion Tons of CO2 in 2010

Photo: Stephen Messenger

Last year, the Amazon rainforest experienced the worst drought on record, reducing normally flowing rivers to sun-baked stretches of dried mud and pushing the fragile ecosystem to the brink. And even more troubling than the c…

Ask Pablo: Paper or Plastic? Spending Cash vs Credit Cards

Image credit: Andres Rueda, used under Creative Commons license.

Dear Pablo: Is it more sustainable to use cash or credit cards to pay for transactions?

The correlation between consumerism and environmental impact goes without saying but aside from …

Ask Pablo: Will iPads in the Cockpit Really Lower Airlines’ Paper Use?

Photo by comedy_nose via Flickr CC

Dear Pablo: Two airlines have recently switched from paper flight records to iPads. Is this really an environmental improvement?

TreeHugger recently covered news of two airlines (

Novacem Carbon-Eating Cement Is Material Connexion’s Material Of The Year

Cement production is responsible for as much as 5% the world’s annual production of CO2 and the world can’t get enough of the stuff. So when Sami first wrote about Novacem, a cement substitute made from magnesium silicate, it was exciting stuff. Coul…