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The Vera C. Rubin Observatory in Chile, beneath an orange sky at sunset.Space · Nov 2, 20262026 ED138: what the candidate for dwarf-planet status really revealsSpotted in Rubin data, this distant body also appears in TESS archives. Its orbit is becoming clearer, but its size and shape remain to be established.Three people discuss in front of a mathematical blackboard, illustrative photograph.AI · Nov 1, 2026OpenAI and Yang–Mills: understanding the announcement without confusing the evidenceOpenAI claims to have proved existence in quantum physics. The Yang–Mills problem also requires a mass gap: here are the key distinctions for understanding the announcement.A closed wood-burning stove and neatly stacked logs in a living room, illustrative photo.Entrepreneurship · Nov 1, 2026In Eymet, Atelier Flamme is banking on service around the stoveSelling a stove is not enough to heat a home properly. The launch of Atelier Flamme in Eymet highlights the role of advice, installation and aftercare.A cyclist, a bus and cars on a street in Paris, illustrating how road space is shared.France · Nov 1, 2026Driving in the city: what the Avignon debate makes us measureMore direct journeys for some, more noise for others: the case of Avignon shows why a traffic plan must be assessed on more than congestion alone.Smoke over Borneo seen by satellite, archive image from September 2019.Nature and environment · Nov 1, 2026Fires in Indonesia: understanding the human toll of the smokeCREA estimates that smoke was linked to 3 560 deaths in September 2026. Behind this figure, different methods and environments shed light on the crisis.View of Grenoble, the Isère and the surrounding hills from the area around the Bastille.Innovation · Nov 1, 2026CEA Grenoble: from former reactors to the technologies of tomorrowWhy did CEA Grenoble change direction? From dismantled reactors to the FAMES pilot line, a change of focus to distinguish from ILL’s activities.An aisle between server racks in a data centre.AI · Nov 1, 2026OpenAI and Google’s TPUs: diversification is also a software challengeThe press has reported a plan to buy Google chips. An OpenAI job listing, meanwhile, reveals a very concrete project: adapting its models to another computing architecture.Xiaozhai sinkhole seen from its southern rim, with its limestone cliffs and vegetation, in November 2009.Nature and environment · Nov 1, 2026Xiaozhai Tiankeng: understanding China’s sinkhole and its forestsAt Xiaozhai, the sinkhole reaches a depth of 662 metres, depending on the point of measurement. This spectacular landscape has long been known; research into tiankengs sheds light on the links between landforms, water and living things.Rows of red seats in a dimly lit, empty cinema.Cinema · Nov 1, 2026Why do we enjoy being scared at the cinema? The thrill is about more than a jump scareA noise, a moment of anticipation, a danger we know is fictional: horror films play on several levels. Research sheds light on this particular pleasure without suggesting it is universal.A pipette dispenses a drop above tubes containing coloured liquids; illustrative photograph.Innovation · Nov 1, 2026An ultrasound tube guides matter through the air: what the Helsinki prototype demonstratesEight centimetres, 256 emitters and 50 watts: a prototype guides matter without a wall. Its potential and the steps still needed before industrial use.Artist’s impression of TOI-561 b and its atmosphere above an ocean of magma; illustration published in 2025.Space · Nov 1, 2026TOI-561 b: how Webb is investigating the clouds of a lava planetA study of infrared variations from TOI-561 b favours a highly reflective atmosphere. Here is what Webb is actually measuring, what the models explain and what remains to be verified.Steve Jefferts and Tom Heavner beside the NIST-F2 atomic clock in the United States, in 2014.Basic science · Nov 1, 2026Atomic clocks: why our time depends on a networkThe alert over the clocks at the Paris Observatory highlights an essential infrastructure. The atomic second, world time and GPS: three concepts to distinguish.
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