Clues for dinosaurs’ diets found in the chemistry of their fossil teeth
Peer-Reviewed Publication
Updates every hour. Last Updated: 10-Sep-2025 05:11 ET (10-Sep-2025 09:11 GMT/UTC)
Researchers at The University of Texas at Austin analyzed the calcium isotopes in the teeth enamel of four different dinosaur species to discover what they ate. They found that some dinosaurs were discerning eaters, with different species preferring different plant parts. This helps explain how these dinosaurs, which all roamed the western U.S. during the Late Jurassic, were all able to coexist in the same ecosystem.
A treasure trove of exceptionally preserved early animals from more than half a billion years ago has been discovered in the Grand Canyon, one of the natural world’s most iconic sites. The rich fossil discovery – the first such find in the Grand Canyon – includes tiny rock-scraping molluscs, filter-feeding crustaceans, spiky-toothed worms, and even fragments of the food they likely ate.
Inspired by a hitchhiking fish that uses a specialized suction organ to latch onto other marine animals, MIT engineers designed a mechanical adhesive device that attaches to soft, slippery surfaces and remains there for days or weeks. The device could be used to deliver drugs in the GI tract or monitor aquatic environments.
Researchers at Institute of Industrial Science, The University of Tokyo, have taken a great stride in supporting earthquake prevention research by developing a system for seafloor position measurements with centimeter-level precision. Combining the Global Navigation Satellite System–Acoustic and an unmanned aerial vehicle, the proposed system eliminates the need for manned surface vessels.
This paper proposes a new theoretical content and research framework of multi-spheric interaction-driven hydrocarbon formation and enrichment through in-depth analyses of the Earth’s multi-spheric coupling mechanisms and cross-spheric cycling processes of volatiles. It establishes a novel theoretical paradigm for optimizing target prioritization of both mature field revitalization and frontier play assessment.
As the climate becomes warmer on average, it makes intuitive sense that we will see more hot days and we've had predictions of this for some time. However, the duration of heatwaves — how many days in a row exceed a temperature that is unusually hot for a given region — can be very important for impacts on humans, livestock and ecosystems. Predicting how these durations will change under a long-term warming trend is more challenging because day-to-day temperatures are correlated — tomorrow's temperatures have a dependence on today's temperature. This study takes this effect into account, along with the warming seen in current and historical observations and projected for the future by climate models for a wide range of land regions. Not only do the heatwave durations increase, but each additional increment of warming causes a larger increase in the typical length of long heat waves. In other words, if the next decade brings as much large-scale warming as a previous decade, the additional increase in heatwave durations would be even larger than we've experienced so far.