Hello Nature readers, would you like to get this Briefing in your inbox free every day? Sign up here. Tools found at an archaeological site near Jubbah, Saudi Arabia (shown here) more closely resemble those crafted by Neanderthals than those made by Homo sapiens, researchers say. (NASA/digitaleye via Alamy) An analysis of stone tools thought
Hello Nature readers, would you like to get this Briefing in your inbox free every day? Sign up here. Credit: Jessie C. Tanner Female Cope’s gray treefrogs (Dryophytes chrysoscelis) struggle to pick the best mates when presented with too much choice. Typically, female treefrogs choose male suitors with the longest calls. When researchers played these
The β-galactosidase molecule can be targeted by antibodies in experiments. But some studies have erroneously used the antibody that targets the bacterial β-galactosidase instead of the mammalian version.Credit: Laguna Design/Science Photo Library More than 50 studies on cell ageing have apparently used the wrong antibody to identify a key protein in experiments, according to a
Quantum computers, such as this one shown at this year’s Mobile World Congress in Barcelona, Spain, could run programs that have been almost completely generated by artificial-intelligence tools. Credit: Angel Garcia/Bloomberg/Getty ‘Vibe coding’ is moving into quantum computing — a field in which programming has notoriously required sophisticated skills. To lower this barrier, researchers at
Artificial intelligence is reshaping the world in front of our eyes. The concerns around AI, however, extend beyond the uncertainty and disruption that accompany any other radical technological change. They stem in part from the direction AI development has taken: many leading companies are engaged in a single-minded pursuit of artificial general intelligence (AGI). Why
Expression and purification of β2AR in Sf9 cells The β2AR construct PN1 was expressed and purified as previously described39,42. In brief, Sf9 cells were infected with a PN1-containing baculovirus produced using the BestBac method. Cells were then collected and resuspended in chilled lysis buffer containing 10 mM HEPES, pH 7.4, 1 mM EDTA, 1 μM alprenolol and protease inhibitors