The doomed class of stars named Wolf-Rayets produce mysterious pinwheel shapes
Mining the seafloor could boost global production of clean energy technology—and destroy the ocean in the process
New research hints at how sauropod dinosaurs got to be so gargantuan
First up on this week’s podcast, we hear about the skewed perception of our own hands, extremely weird giant viruses, champion regenerating flatworms, and more from Newsletter Editor Christie Wilcox
Your body is ageing down one of four – or more – possible pathways. Figuring out your “ageotype” could help you zero in on the things you can do to stay healthier for longer
THERE is a (probably apocryphal) story about Henry Ford sending agents out to junkyards across the US in search of scrapped Model Ts. The famous industrialist wanted to know which of the car’s vital components failed first, so he could do something about it. The agents reported back that every bit of the car was susceptible to failure, but some were more susceptible than others, except for one – a component of the steering system called the kingpin, which almost never failed. They expected Ford to announce plans to extend the working lives of the weaker components. Instead, he ordered his engineers to make less resilient kingpins. No point wasting good money on a component that always outlived the others.
The object’s deep red colour suggests it existed when the Universe was less than 700 million years old.
The James Webb Space Telescope (JWST) has seen what is probably a quasar from the early Universe1.
The Scopus, Dimensions and Web of Science databases are introducing conversational AI search.
The conversational AI-powered chatbots that have come to Internet search engines, such as Google’s Bard and Microsoft’s Bing, look increasingly set to change scientific search, too. On 1 August, Dutch publishing giant Elsevier released a ChatGPT-like artificial-intelligence (AI) interface for some users of its Scopus database, and British firm Digital Science announced a closed trial of an AI large language model (LLM) assistant for its Dimensions database. Meanwhile, US firm Clarivate says it’s working on bringing LLMs to its Web of Science database.
By Jessica Rawson
When constructing monumental tombs thousands of years ago, “the Egyptians built up” — with their pyramids — whereas “the Chinese built down”, writes sinologist Jessica Rawson. The geology of China’s dry Loess Plateau permitted the excavation of shafts more than 10 metres deep. These tombs were filled with objects for the afterlife. Rawson’s majestic history explores 11 such monuments and one large sacrificial deposit, dating from 5,000 years ago to the third century bc, with the First Emperor’s protective Terracotta Army.
Ulbe Bosma
Sugar’s societal dominance is a recent development. Granulated sugar was eaten from the sixth century bc in India, but refined sugar became widely available in Europe only in the nineteenth century. Its history is both a story of progress and a bitter-sweet tale of “exploitation, racism, obesity, and environmental destruction”, writes historian Ulbe Bosma in his authoritative, highly readable study — the first to be truly global. Of 12.5 million Africans kidnapped in the Atlantic slave trade, between half and two-thirds were enslaved on sugar plantations.
Piero Martin (transl. Gregory Conti)
The great civilizations of the ancient world could use precise measurements — witness the Egyptian pyramids. But their units differed. Not until 1960 was the international system of measurement (SI) introduced, defining the metre, second, kilogram, ampere, kelvin and candela — then the mole in 1971. Each gets a chapter in this concise, anecdotal history by experimental physicist Piero Martin. He stresses the subjective aspect of measurement, such as the idea that the quality of scientific publications matters more than their quantity.
By Ken McNamara
Earth scientist Ken McNamara focuses on palaeontology and evolution. His appealing book about rocks and their lessons — illustrated with fine photographs of fossils — leaves aside igneous and metamorphic rocks, and the wonders of mineralogy. It concentrates instead on sedimentary rocks: mudstones, siltstones, sandstones and limestones, scattered over three-quarters of Earth’s surface in “endless piles”. As he jokily advises: “Ignore rocks at your peril.” But then surely continental drift deserved proper discussion?
Marjolijn van Heemstra (transl. Jonathan Reeder)
Dutch space reporter Marjolijn van Heemstra is also a poet, novelist and playwright. This translation of her highly personal meditation on the Universe reflects lyrically on the fact that the atmosphere “signifies a boundary”, whereas space “appeals to our notion of boundlessness”. She notes a growing difference of opinion between those who see space exploration as irresponsible because our planet is in deep trouble — environmental and otherwise — and those who regard space as a potential refuge from Earth.
Pollution cuts have diminished “ship track” clouds, adding to global warming
Tropical forests host an unusually high diversity of tree species. Strong interactions between individuals are hypothesized to create these patterns. A tree is more likely to survive when surrounded by different tree species with different resource needs, diseases, and herbivores. Kalyuzhny et al. found patterns consistent with this mechanism in a long-term forest plot in Panama. Adult trees in this site are more distant from members of their own species than from other species and more distant than would be expected by chance or by the limits of seed dispersal. This study shows that distances between conspecifics are maintained in adult trees, helping to explain the high diversity of tropical forests.
Climate change is making water stress worse for billions worldwide. Scaling up both new and traditional solutions must be a priority.
An immune response triggered by cardiac disease affects the function of a gland with a key role in the sleep–wake cycle.
The advent of social media forever changed how we consume news. At least half of Americans rely on it for news, and Facebook (owned by parent company Meta) is the most popular. Meta’s Facebook and Instagram platforms are funded through advertisements and generate more revenue when users spend more time on their platforms. To make platforms alluring and increase screen time, tech companies operate on business models that incentivize algorithms that are designed to elevate eye-catching content to the top of users’ feeds—content that captures attention and may go “viral” by stimulating “engagement” through comments, likes, and resharing.
Deep mantle waves from continental rifting trigger mysterious kimberlite volcanoes
Probe clears Marc Tessier-Lavigne of misconduct but criticizes lab culture and lack of “appetite” for corrections
Despite their wide use, large language models are still mysterious. Revealing their true nature is urgent and important.
Bloodstream infections by a common fungus are less deadly in mice engineered to have lower levels of a protein secreted by immune cells.
Millions of birds from all over the world flock to these wetlands every year to nest and raise their young. Come along with Cornell Lab’s Gerrit Vyn as he joins a team to capture image of the region’s birdlife.
America’s Arctic is one of North America’s last great wilderness areas, a critical habitat for migratory birds from around the world, and a treasure to be protected for future generations.
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