Image-of-the-Week: Seaweed Exodus


Kelp.: Credit:Bjørn Christian Tørrissen via Wikimedia Commons.Kelp in Tasmania, Australia. Credit:Bjørn Christian Tørrissen via Wikimedia Commons.Our knowledge of global-warming changes in the ocean is paltry compared to changes on land. Now a new paper in Current Biology reports on alarming shifts in distribution of 52 species of seaweed in Australia during two periods: 1940-1960 and 1990-2009. In the interval between those periods, waters warmed by about 2°C/3.6°F on Australia’s Pacific coast and by about 1°C/1.8°F on the Indian Ocean coast. The authors drew upon more than 20,000 records in Australia’s Virtual Herbarium (a very cool online database), and found that marine algae migrated south towards cooler waters as the ocean warmed—shifting south on the east coast by about 200km/124mi and on the west coast by about 50km/31mi. There’s only so far algae—and all the species dependent on them—can shift before they run of of landmass to anchor to. In an interview with Australian news, lead author Thomas Wernberg says a “back of the envelope type calculation” suggests that 25 percent of Australia’s temperate marine species could be at risk of extinction by 2070. 

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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.

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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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