Erika Spanger-Siegfried

Senior analyst, Climate & Energy Program

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Erika Spanger-Siegfried, a senior analyst in the Climate and Energy program at the Union of Concerned Scientists, researches, writes and speaks about U.S. climate change impacts and preparedness.She holds a master’s degree in energy and environmental analysis from Boston University and a B.S. in fisheries biology from the University of Massachusetts Amherst.. See Erika's full bio.

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Photo: Duncan Hull

Lies Hurt. Facts Matter. And So Does Resistance.

We need to stand and be counted for the objective truth and the cold hard facts on which it stands. Read more >

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Graphic: Climate Change Institute

Global Warming in the Arctic: A Sensitive Climate Gone Off the Rails

Right now temperatures across much of the Arctic are 36 degrees F above normal. Large areas are well above freezing. And instead of rapidly expanding, sea ice extent is in decline. Taken together, this is not unusual. It’s unheard of. Read more >

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King Tides and the “Supermoon”—Time and Tide Wait for No Man

The laws of physics are unchanged by the US presidential election: the planet is still warming, sea levels are still rising, and the moon is still circling the earth. Read more >

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King Tide’s Gift: Gentle Awakenings to a Rapidly Changing World

If this is how we on the coasts get accustomed to living in a climate-changed world—literally “getting our feet wet”—I think we can count ourselves lucky. Because there are much harsher ways to wake up to our changing world. Read more >

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Winter Storm Jonas, Storm Surge, and the Science of Coastal Flooding

Winter Storm Jonas, poised to pound the mid-Atlantic this weekend, could bring record-breaking conditions. Some of the greatest danger will exist along our coasts, as high winds and high tides contribute to storm surge and potentially massive waves. Read more >

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