[ad_1] Some geoscientists argue that humans have transformed the planet with plastic trash, radioactive debris and fossil-fuel emissions, among other things — and that the changes should be recognized with a new geological epoch.Credit: Mark Meredith/Getty A high-profile battle over whether to designate the ‘Anthropocene’ as a new geological epoch has come to an end. … Read more
[ad_1] Bacterial strains Mtb strains are derivatives of H37Rv unless otherwise noted. ΔbioA Mtb was obtained from the Schnappinger laboratory64. E. coli strains are derivatives of DH5α (NEB), Rosetta2, or BL21(DE3) (Novagen). Mycobacterial cultures Mtb was grown at 37 °C in Difco Middlebrook 7H9 broth or on 7H10 agar supplemented with 0.2% glycerol (7H9) or 0.5% … Read more
[ad_1] Crystals of ketamine, which is growing in popularity as a treatment for depression and anxiety.Credit: M. I. Walker/Science Photo Library The drug ketamine is enjoying a second life. First developed as an anaesthetic that was used widely by US battlefield surgeons during the Vietnam war, it is growing in popularity for treating depression and … Read more
[ad_1] Organs from genetically modified pigs could help keep patients alive while they are awaiting a human donor.Credit: Feature China/Future Publishing via Getty In a milestone for the transplantation of animal organs into people, a 50-year-old clinically dead man in China has become the first person to receive a liver from a pig. With consent … Read more
[ad_1] Vladimir Putin spoke at an event marking the 300th anniversary of the Russian Academy of Sciences.Credit: Getty Images Russian President Vladimir Putin has secured a fifth term in office, claiming a landslide victory in the country’s presidential election on 18 March. Election officials say he won a record 87% of votes. This outcome came … Read more
[ad_1] Hello Nature readers, would you like to get this Briefing in your inbox free every week? Sign up here. Some models are more likely to associate African American English with negative traits than Standard American English.Credit: Jaap Arriens/NurPhoto via Getty Some large language models (LLMs), including those that power chatbots such as ChatGPT, are … Read more
[ad_1] Building an atlas of all the cell types that make up the body typically requires multinational collaborations and massive budgets. But a technique that can analyse the genetic activity of hundreds of thousands of individual cells at a time has allowed one small team to produce a time-lapse atlas of an embryonic mouse’s cells … Read more
[ad_1] To experimentally realize a curved spacetime such as a black hole requires a specific relative motion between the excitations and the background medium. One-dimensional supersonic flow, the archetypal example of an acoustic black hole, provides a platform for observations of Hawking radiation in both classical20,21 and quantum fluids9,10,22. More complex phenomena such as Penrose … Read more
[ad_1] Cadence noticed the warfighter on her way to school. He was still there later, sitting in the tiny fenced park, as she walked back home along Sixth Avenue. There was a pigeon watching him, which the police had thought at one time was a good way to disguise a camera. She stopped and sat … Read more
[ad_1] A star in the process of consuming a planet (artist’s conception).Credit: NG Images/Alamy Stellar detectives have identified seven stars that recently dined on a rocky planet. The study doubles the number of binary stars known to have consumed a planet, and questions the perception that mature solar systems harbouring Earth-like planets are usually stable. … Read more