Across the waters of West Africa, commercial fishing vessels vanish along international boundary lines.
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Source linkedAlmost one year ago, paleontologists finally settled a longstanding debate about Tyrannosaurus rex, arguably Earth’s most famous dinosaur. After reviewing decades of mounting evidence, researchers documented around 150 morphological differences across multiple supposed juvenile T. rex skeletons. Instead of young dinosaurs, these were actually adult examples of an entirely separate species now known as Nanotyrannus lancensis. While Nanotyrannus was dwarfed by its massive relative, it still reached an impressive 18 feet long and weighed as much as 1,500 pounds. But while it may have lost some of its cultural cache during the rebrand, a well-preserved specimen nicknamed Jodi may still sell for upwards of $9 million at an upcoming auction. “It completely changes what we understand about the Cretaceous,” Cassandra Hatton, Sotheby’s head of science and natural history, said during a recent interview. Paleontologists first suspected the existence of a separate species after discovering a uniquely proportioned skull at Montana’s Hell Creek Formation in 1946. Back-and-forth arguments about the dinosaur’s true identity continued for the next 80 years, but the ramifications weren’t simply a matter of semantics. If confirmed, it meant T. rex wasn’t the only tyrannosauroid roaming North America during the late Cretaceous period. Jodi is a relatively new find. Named after the Montana rancher who found it, Jodi Pierson, the skeleton was excavated at the Hell Creek Formation in 2019, and is estimated to be about 55 percent complete. It features all four of its claws as well as 35 teeth in a nearly complete skull. According to the Sotheby’s auction listing, Jodi stands about 6.5 feet tall and measures 19.6 feet from nose to tail. The mounted dinosaur includes all of its surviving fossil
Source linkedMarine biologists are sounding the alarm on behalf of the Galápagos Islands’ marine iguana (Amblyrhynchus cristatus). Without tightened regulations on the often abused exotic pet trade, researchers warn that a recent “strange uptick” in illegal animal trafficking combined with this season’s Super El Niño is further endangering the already vulnerable reptiles living on the Eastern Pacific archipelago. “They are already shrinking in size and facing mass mortality, either by starvation or by trying to swim longer distances in search of food,” Juan José Alava, a marine ecotoxicologist at Canada’s Simon Fraser University, explained in a recent letter published in Science. The marine iguana family encompasses at least 11 known subspecies, each specially evolved to live on the Galápagos Islands. They are the only reptiles in the world capable of foraging underwater for macroalgae, which makes up the majority of their diet. Although iguana colonies remain relatively stable, the International Union for Conservation of Nature (IUCN) still lists them as Vulnerable due to predators, mounting pollution issues, and cyclical El Niño events. Ten of the 11 recognized subspecies are also locally classified as either Critically Endangered or Endangered. Sale of iguanas is banned under the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), but a recent uptick in illegal trafficking along with increasingly dramatic climate shifts is adding more stress to the situation. Ecuadorian authorities have caught people attempting to smuggle iguanas multiple times this year. In May, officials discovered at least a dozen animals inside handbags at an airport that were bound for illegal markets. Law enforcement found another 32 tied up inside a suitcase intended fo
Source linkedIt’s true, the moon is shrinking. And astronomers now know how fast it’s contracting. While only satellite observations and the most delicate instruments can detect these shifts, the consequences of this shrinkage means moonquakes can occur anywhere on the lunar surface at a moment’s notice. A team led by Smithsonian National Air and Space Museum planetary geologist Thomas Watters detailed their findings in a study recently published in The Planetary Science Journal. Researchers used data from NASA’s Lunar Reconnaissance Orbiter Camera (LROC), which has spent over 17 years generating millions of images of the moon’s surface. A shriveling lunar landscape may sound dramatic, but it’s occurring at a glacial pace. Based on these new calculations, the moon’s overall radius has decreased nearly 148 feet over the last 400–800 million years as it continues to cool. That’s about 2.4 to 4.3 inches per million years, or just 0.1 micrometer annually. Although slow, the incremental activity’s effects are visible everywhere. On Earth, about 90 percent of all seismic activity occurs near the boundaries between lithospheric plates. But unlike its host planet, our moon is encased by a single, shell-like plate. This means interior cooling can generate slips and faults anywhere at any given time. After reviewing images taken by the LROC, the study’s authors tallied over 10,000 visible lunar faults. “The number of these young faults revealed in LROC images is much greater than I ever imagined,” said Watters. “As the interior of the moon continues to cool and contract, it is expected that the growth of existing faults and formation of new faults continues today.” While the faults can happen anywhere, some lunar regions are more likely than others to feature them. Areas with the thickest cru
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