Glaciers & Ice Caps To Dominate Sea-Level Rise Through 21st Century

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Ice loss from glaciers and ice caps is expected to cause more global sea rise this century than the massive Greenland and Antarctic ice sheets. A startling new University of Colorado at Boulder study finds glaciers and ice caps currently contributing 60 percent of the world’s ice to the oceans, with the rate markedly accelerating in the past decade. The contribution is presently 100 cubic miles of ice annually, a volume nearly equal to the water in Lake Erie, and is rising by three cubic miles per year. In contrast, Greenland now contributes 28 percent of the total global sea rise from ice loss and Antarctica 12 percent. The acceleration of glaciers and ice caps is due, at least in part, to rapid changes in the flow of tidewater glaciers discharging icebergs into the ocean. The team estimates the accelerating melt of glaciers and ice caps could add 4 inches to 9.5 inches of additional sea-level rise globally by 2100 &mdash not including the thermal expansion of warming ocean water, which could double those numbers. A one-foot sea-level rise typically causes a shoreline retreat of 100 feet or more. . . In other words, even if the big canons stay frozen, these little guys are going to inflict a lot of damage.

This of the Jakobshavn Glacier in Greenland. JULIA WHITTY

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SIX TRUTHS

Reclaiming power from those who abuse it often starts with telling the truth. And in "This Is How Authoritarians Get Defeated," MoJo's Monika Bauerlein unpacks six truths to remember during the homestretch of an election where democracy, truth, and decency are on the line.

Truth #1: The chaos is the point.

Truth #2: Team Reality is bigger than it seems.

Truth #3: Facebook owns this.

Truth #4: When we go to work, we're in the fight.

Truth #5: It's about minority rule.

Truth #6: The only thing that can save us is…us.

Please take a moment to see how all these truths add up, because what happens in the weeks and months ahead will reverberate for at least a generation and we better be prepared.

And if you think journalism like Mother Jones'—that calls it like it is, that will never acquiesce to power, that looks where others don't—can help guide us through this historic, high-stakes moment, and you're able to right now, please help us reach our $350,000 goal by October 31 with a donation today. It's all hands on deck for democracy.

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