Bear-Market Biodiversity

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450px-Medved_mzoo.jpg Think Wall Street’s rollercoaster ride is scary? Imagine if stocks were species. That’s what the future looks like in a warming world: a monster bear market robbing the world of its real riches.

A new review published in Science addresses the question of whether the tropical forests and coral reefs of the tropics will have the most to lose as a result of global warming. Some say no: that tropical organisms will do well because their ranges will expand into temperate areas. Others says yes: because there’s little or no wilderness left in the temperate zone for them to move into.

Now a review of published papers finds that for plants and insects on a mountain slope in Costa Rica, a 3.2-degree C increase in temperature threatens 53 percent of lowland species with extinction, while 51 percent face range-shift gaps—meaning they have nowhere else to go.

Another reviewed study follows historical range changes for small mammals during 100 years of climate change in Yosemite National Park. These data show that species’ ranges are likely to contract dangerously as warming pushes life farther and farther up mountain slopes. . . Bottom line: biodiversity is Earth’s credit line. Without it, there’s absolutely no way to fund the future. Time to reassess our fatally flawed economics .

Julia Whitty is Mother Jones’ environmental correspondent, lecturer, and 2008 winner of the Kiriyama Prize and the John Burroughs Medal Award.

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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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