EurekAlert! Staff Picks

Each week, our team members share their favorite recent news releases, stories that caught their eye, sparked their curiosity, or made them think. We hope you’ll find them just as interesting!

Seth Rose

Seth Rose

Editorial Content Manager

Scientists discover ‘D-rex’, a giant fungus from Chinese forests whose unique lineage dates back 65 million years

Continuing my fungus obsession this week with a Frontiers paper about a particularly interesting and interestingly named specimen: Dianjunus rex, a newly discovered species with fruiting bodies a foot-and-a-half tall and weighing nearly 5 pounds. It's not just the raw size that drew me in though: according to molecular analysis performed by the Chinese researchers, the species first came around not that long after the extinction event that wiped out the dinosaurs (hence the T-Rex evoking name). The researchers theorize the species was able to grow so large due to the enormous amounts of dead plant material present after the extinction event, which I find just so cool: with the biggest living organisms on their way out, their crown could be taken from some unexpected places.

Does the gender pay gap extend to AI? New University of Limerick research finds female AI agents ‘paid’ less

One of the things that intrigues and frustrates me about AI is the degree to which it replicates the biases of the humans that created it. You heard about this more in the early days of the AI boom with models being less capable of rendering nonwhite faces, but as this study presented at the 14th Nordic Conference on Human-Computer Interaction demonstrates, sometimes the AI itself isn't actually the point of failure.

The University of Limerick researchers and their collaborators took 189 study participants and had them do various work tasks paired with AI assistants of different "genders", after which they were instructed to give money to the assistants based on how they performed. Despite the models being completely identical in every way other than the vocal output, "Johanna" was paid 10.25% less than "Johan" for the exact same assistance (and despite the participants claiming they had no particular gender biases). It's a somewhat disheartening demonstration of how deep and unconscious these biases run when they show up even in cases where discrimination is even more nonsensical than usual. The agents did the exact same work with the exact same tech, what were the participants even discriminating against? If we're not aware of and interrogating those biases though, the opportunities to move past them afforded by the increasing "humanity" of AI agents will be lost in favor of replicating the worst parts of the pre-AI world.

These parasites are not in tune with the lunar cycle

Ever since playing The Last of Us, I've been fascinated by the weird and more than a little scary world of parasites that can influence the behavior of their hosts. In this instance, Kyoto University researchers were curious as to whether nematomorphs (horsehair worms) targeting only nocturnal species like crickets meant their manipulations were tied to the cycles of the moon. After observing manipulated crickets during full and new moon cycles over the course of a fall season, they were surprised to find little correlation. Despite the moonlight in theory making it a lot easier for nematomorphs to get their hijacked crickets into the water, not much difference was found between behavior during the different lunar cycles. The implication is that perhaps their manipulation strategies rely on other "non-visual" methods like inducing hyperactivity or even altering their host's response to gravity! I remain grateful that The Last of Us is a work of fiction!

Also wanted to point out: more great headline work this week! It's not flashy or clever, but the seemingly random juxtaposition between the two main ideas (parasites and the moon) made me wonder what exactly it could mean for a parasite to be in tune with lunar cycles and that made it an easy click. It's good to let your headlines generate a little mystery sometimes!