Butterflies Suffering From Changing Climate

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Well, this is sad news. Expanding forests in the Canadian Rocky Mountains are slowly isolating groups of alpine butterflies from each other. A new study from the University of Alberta suggests this isolation may lead to the extinction of some species. Global warming is raising the altitude of treeline, and this problem is exacerbated by a policy not to initiate prescribed burns for forest management. Consequently, meadow-loving butterflies, such as the Apollo, are suffering, as forests encroach on mountain meadows. “The risk of local extinction and inbreeding depression will increase as meadows shrink, the population sizes decrease and the populations become more isolated,” said Jens Roland, lead author. “The gene pool of this species is getting more and more fragmented, and gene flow is reduced, which means these populations are more vulnerable.” One particularly cold winter or summer season may be enough to wipe out an entire meadow of Apollo. The paper appears in today’s Proceedings of the National Academy of Sciences. 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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