Published on: 2025-07-30 02:29:16
Dangers come but dangers also go and when they do, the brain has an “all-clear” signal that teaches it to extinguish its fear. A new study in mice by MIT neuroscientists shows that the signal is the release of dopamine along a specific interregional brain circuit. The research therefore pinpoints a potentially critical mechanism of mental health, restoring calm when it works, but prolonging anxiety or even post-traumatic stress disorder when it doesn’t. “Dopamine is essential to initiate fear e
Keywords: amygdala dopamine extinction fear neurons
Find related items on AmazonPublished on: 2025-08-16 03:00:06
Some people will tell you that the dire wolves are back, while others will tell you they are not. Colossal Biosciences kicked off an avalanche of media coverage, including both hype and harsh criticism, when the company said it brought back dire wolves, an extinct species given renewed popularity by its role in the Game of Thrones franchise, using gene-editing and cloning technology. We will discuss the details of what Colossal has accomplished, but this technology also raises a bigger question
Keywords: colossal dire extinction species wolves
Find related items on AmazonPublished on: 2025-09-02 12:48:37
The damage the Trump administration has done to science in a few short months is both well documented and incalculable, but in recent days that assault has taken an alarming twist. Their latest project is not firing researchers or pulling funds—although there’s still plenty of that going on. It’s the inversion of science itself. Here’s how it works. Three “dire wolves” are born in an undisclosed location in the continental United States, and the media goes wild. This is big news for Game of Thr
Keywords: conservation dire extinction species wolves
Find related items on AmazonPublished on: 2025-09-16 12:20:56
The end-Cretaceous extinction—the massive extinction event widely attributed to an asteroid impact that wiped out all non-avian dinosaurs approximately 66 million years ago—had a profound impact on the evolution of all life on Earth. Specifically, mammals eventually diversified into thousands of distinct species. By studying mammal remains from the end of the Cretaceous period (approximately 145 to 66 million years ago) and the early Paleogene period (66 to 23 million years ago) an internationa
Keywords: cretaceous end extinction mammals study
Find related items on AmazonPublished on: 2025-10-02 02:21:33
About 252 million years ago, volcanic eruptions triggered the End-Permian Mass Extinction, also known as the Great Dying. About 96 percent of marine species were wiped out—but were things just as grim on land? Scientists have debated whether this event caused nearly as much terrestrial destruction. Now, researchers from the Nanjing Institute of Geology and Paleontology (NIGPAS) of the Chinese Academy of Sciences suggest that terrestrial ecosystems did not suffer nearly as much as the oceans. L
Keywords: extinction life mass species years
Find related items on AmazonPublished on: 2025-10-12 04:45:02
About 252 million years ago, volcanic eruptions triggered the End-Permian Mass Extinction, also known as the Great Dying. About 96 percent of marine species were wiped out—but were things just as grim on land? Scientists have debated whether this event caused nearly as much terrestrial destruction. Now, researchers from the Nanjing Institute of Geology and Paleontology (NIGPAS) of the Chinese Academy of Sciences suggest that terrestrial ecosystems did not suffer nearly as much as the oceans. L
Keywords: extinction life mass species years
Find related items on AmazonPublished on: 2025-10-17 11:00:36
Astronomers at the Max Planck Institute for Astronomy just constructed a detailed, three-dimensional map of the cosmic dust in our galaxy. The map makes use of 130 million spectra from the European Space Agency’s Gaia mission to reveal properties of the dust, which clouds the cosmos between our world and just about everything else in the Milky Way. The 3D map indicates where the cloud most muddies the waters of the cosmos, as well as charts the regions where the “extinction” of light is less af
Keywords: dust extinction gaia light map
Find related items on AmazonPublished on: 2025-10-27 14:10:00
This week saw the release of some fascinating news about some very furry rodents—so-called “woolly mice”—created as part of an experiment to explore how we might one day resurrect the woolly mammoth. The idea of bringing back extinct species has gained traction thanks to advances in sequencing of ancient DNA. This ancient genetic data is deepening our understanding of the past—for instance, by shedding light on interactions among prehistoric humans. But researchers are becoming more ambitious
Keywords: ancient dna extinction read woolly
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