Columnists
Ole Hendrickson | While the recent G7 commitment to "decarbonization" by 2100 is a positive step, accelerated melting of the Arctic suggests a need to step up the transition to a sustainable energy future.
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Photo: jthornett/flickr
Brent Patterson | The Intergovernmental Panel on Climate Change, the United Nations organization that assesses the impacts of climate change, has released a new report, the second part of a larger assessment.
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Mont Blanc glacier tracks. Photo: Alistair Knock/Flickr
John Crump | Greenhouse gas levels have reached 400 parts per million in the Arctic for the first time. The readings in the Arctic are important because the region is an indicator of changes to come.
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Sarah Laskow | Climate skeptics found plenty of reasons to dig out their dreary critiques this week, between the continuing controversy over erroneous reports from the International Panel for Climate Change (IPCC).
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Sarah Laskow | Nuclear power, biofuels, clean coal: These are the Obama administration's answers to climate change.