Extinction Kills Whole Taxonomic Families

Photo courtesy the US Department of Agriculture

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The BBC reports how whole “chunks of life” are lost in extinction events when related species vanish together. That’s based on a new paper in Science analyzing the extinction rates of fossil marine bivalves (clams, oysters, mussels) from the past 200 million years.

Turns out that extinctions tend to cluster along evolutionary lineages, wiping out species with a common ancestor and eliminating entire branches of the evolutionary tree. One researcher called it a casino of extinctions with the odds rigged against certain groups. The same is happening to modern species. For instance, the same drivers—climatic change and habitat loss—are now threatening whole groups of seabirds. This new understanding could enable more effective conservation efforts faster.

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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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