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Nature, Published online: 30 October 2025; doi:10.1038/d41586-025-03552-0New evidence answers the question about whether some fossils are Tyrannosaurus rex juveniles or a different species, with implications for decades of published science.

Keeping inflammatory pathways in check, instead of “burning” unchecked, is pivotal for overall health. And since 25(OH)D levels (i.e., the blood biomarker measure of vitamin D sufficiency) have been observed to influence CRP status, ongoing research that investigates exactly how vitamin D plays a part in regulating a healthy inflammatory response is important to gain an understanding of how the essential vitamin helps support cardiovascular, neurological, musculoskeletal, gastrointestinal, and immune health.* 

For 12 weeks, participants ate about two ounces of pistachios as their bedtime snack, roughly two small handfuls. In another 12-week phase, the same participants swapped the pistachios for a typical carb-based snack, like crackers or toast (and yes, your beloved bedtime cookies fall into that category).

Ahmadi, M., Wu, T. & Hu, B. A review on organic–inorganic halide perovskite photodetectors: device engineering and fundamental physics. Adv. Mater. 29, 1605242 (2017).Article  ADS  Google Scholar  Chen, J. et al. Highly efficient and stable perovskite solar cells enabled by low-dimensional perovskitoids. Sci. Adv. 8, eabk2722 (2022).Article  ADS  PubMed  PubMed Central  Google Scholar  Shi, E. et al. Two-dimensional halide perovskite nanomaterials and heterostructures. Chem. Soc. Rev. 47, 6046–6072 (2018).Article  PubMed  Google Scholar  Song, K. et al. Atomic-resolution imaging of halide perovskites using electron microscopy. Adv. Energy Mater. 10, 1904006 (2020).Article  ADS  Google Scholar  Zhang, D. et al. Atomic-resolution transmission electron…

As flu season approaches and there is a push for vaccination, a study by Allen Institute scientists has uncovered why vaccines can trigger a weaker response in older adults—aged about 65 years—and suggests how these immune responses might be improved. In what they state is the largest study of its kind, the researchers used techniques including single-cell RNA sequencing (scRNA-seq), proteomics, and spectral flow cytometry to profile the immune systems of younger and older individuals over time. The findings showed that T cells—key players in coordinating immune responses—undergo profound and specific changes as we age. These changes, the results suggest,…

Researchers revealed how HIV integrase assembles to integrate DNA into the genome and package RNA.Image credit:©iStock.com, Design CellsHIV is a lifelong infection that, without proper antiviral treatment, will kill cells of the immune system and leave individuals susceptible to infections and cancers. The longevity of this virus comes from its ability to integrate into the host genome with the help of the HIV protein integrase. Recently, researchers showed that integrase also binds HIV’s RNA during virion assembly, further highlighting the importance of this enzyme.1To exert these functions, individual integrase proteins coordinate into multimers. Prior research suggests that they assemble into…

Katie Lee Biegel’s sheet-pan fish and chips is quick, easy and family-approved.Cornflakes add a crunchy twist to this simple, oven-baked take on a classic.Pair with peas and your favorite sauces for a cozy, balanced fall meal. There’s nothing quite like a cozy, comforting meal on a fall evening, and The Kitchen host Katie Lee Biegel has been wowing us with her autumn comfort meals for years. There’s her super-easy butternut squash soup, made with just a few simple ingredients, and her sheet-pan shrimp and broccoli, perfect for a weeknight meal. Now, the chef and cookbook author is sharing her sheet-pan…

Prostate specific antigen screening reduces the risk of death from prostate cancer by 13%, one of the largest randomised studies of its kind concludes.1This overall reduction in mortality was similar to that seen with breast or bowel cancer screening, experts said.The results of the study, published in the New England Journal of Medicine and with a median follow-up of 23 years, come amid ongoing debate about the value of a PSA based screening programme, owing to the substantial risk of overdiagnosis and overtreatment.2 Experts say further research is needed to investigate a more targeted approach to screening and how to…

Bright neon-yellow pee is usually from taking too much riboflavin (vitamin B2) from supplements.Sometimes supplements may contain other ingredients like vitamin C, beet powder or dyes that can change urine color.If you notice sudden changes, like red or dark brown urine, visit a health professional. If you look in the toilet after you pee—which I actually encourage—you may be surprised to see what looks like a melted yellow highlighter in the bowl. That neon color obviously didn’t come from a marker, but more likely from one of your vitamins.  “Riboflavin, or vitamin B2, causes bright yellow urine because it is…

Hurricane Melissa was expected to unleash as much as 75 centimetres of rain on some parts of Jamaica. Credit: NOAA/GettyAs Hurricane Melissa exploded into a category-5 storm over the weekend, scientists forecast its trajectory and growth with a powerful new tool — helping to inform warnings to Jamaica and other nations that the storm has devasted. That tool, an artificial intelligence (AI) forecast model developed by Google DeepMind, is successfully predicting how Melissa and other dangerous storms arise and evolve.The model is being used this year by the US National Hurricane Center (NHC), a leading source of hurricane information in…