Google’s Search Engine Pinpoints Extinction

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Thanks to the BBC for a link to this paper describing how Google’s algorithm for ranking web pages could determine what species are most critical for sustaining ecosystems.

The authors write in PLoS Computational Biology that their version of PageRank could ascertain which extinction would likely lead to ecosystem collapse.

Species are embedded in complex networks of relationships. Some more so than others. In those cases, a single extinction can cascade into the loss of many other species.

Figuring this out in advance is supremely difficult. The number of links in even simple ecosystems exceeds the number of atoms in the universe. We can’t sort out that kind of complexity without quantum computers.

But maybe Google can. Researchers Stefano Allesina and Mercedes Pascual reversed the definition of the PageRank algorithm that ranks a webpage as important if important pages point to it. In the conservation biology context, even humble species are important if they point to important species.

The researchers also designed a cyclical element into the foodweb system by including the detritus pool… you know, that to which all returns and that from which all arises.

Allesina and Pascual then tested their method against published foodwebs to rank species according to the damage caused if they were removed from the ecosystem. They also tested algorithms already in use in computational biology to find a solution to the same problem.

The results: PageRank gave them exactly the same solution as the more complicated algorithms.

In the real world, this research will likely make it easier to quickly target conservation efforts for maximum benefit.

Hope evolves in that muddy puddle where technology meets environmentalism.
 

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WHO DOESN’T LOVE A POSITIVE STORY—OR TWO?

“Great journalism really does make a difference in this world: it can even save kids.”

That’s what a civil rights lawyer wrote to Julia Lurie, the day after her major investigation into a psychiatric hospital chain that uses foster children as “cash cows” published, letting her know he was using her findings that same day in a hearing to keep a child out of one of the facilities we investigated.

That’s awesome. As is the fact that Julia, who spent a full year reporting this challenging story, promptly heard from a Senate committee that will use her work in their own investigation of Universal Health Services. There’s no doubt her revelations will continue to have a big impact in the months and years to come.

Like another story about Mother Jones’ real-world impact.

This one, a multiyear investigation, published in 2021, exposed conditions in sugar work camps in the Dominican Republic owned by Central Romana—the conglomerate behind brands like C&H and Domino, whose product ends up in our Hershey bars and other sweets. A year ago, the Biden administration banned sugar imports from Central Romana. And just recently, we learned of a previously undisclosed investigation from the Department of Homeland Security, looking into working conditions at Central Romana. How big of a deal is this?

“This could be the first time a corporation would be held criminally liable for forced labor in their own supply chains,” according to a retired special agent we talked to.

Wow.

And it is only because Mother Jones is funded primarily by donations from readers that we can mount ambitious, yearlong—or more—investigations like these two stories that are making waves.

About that: It’s unfathomably hard in the news business right now, and we came up about $28,000 short during our recent fall fundraising campaign. We simply have to make that up soon to avoid falling further behind than can be made up for, or needing to somehow trim $1 million from our budget, like happened last year.

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