Heart surgery had an anti-cancer effect in a highly unusual case
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A man with severe skin cancer went into remission after having heart surgery. The operation is thought to have caused a major reset of his immune system that destroyed the tumour – but also caused him to develop a severe bee sting allergy.
Social cohesion is the glue that holds society together. Now, those bonds are breaking, and polarization has been growing for years. Educational programs aimed at strengthening social cohesion by promoting greater tolerance often focus on social differences, such as ethnicity, religion or nationality. Yet are such programs effective? A German–American team of researchers involving the University of Konstanz recommends the opposite approach: Instead of focusing on differences, such programs should center on universal human values.
A person cools off with water from an open fire hydrant during a heat wave on the West Side of Chicago, Illinois, on July 2, 2026.
July 2026 marked the hottest month on record for the contiguous United States, the National Oceanic and Atmospheric Administration said Monday, continuing a recent trend driven by human-caused climate change.
Conceptual model of historical depositional processes, biogeochemical zonation, and microbial ammonium metabolism. Credit: Adapted from Lu et al., Nature Communications (2026).
A study led by Professor Jimmy Jiujiu Jiao from the Department of Earth and Planetary Sciences at The University of Hong Kong (HKU) and Professor Meng Li from Shenzhen University has identified microbial fermentation as the likely main pathway for ammonium production in sediments beneath the Pearl River Delta, helping to explain the region's exceptionally high natural groundwater ammonium levels.
Conceptual illustration of a thermotronic circuit integrated within an electronic circuit. The colored elements represent thermotronic components, including the quantum thermal transistors QTT1 and QTT2, while the grayscale elements represent the electronic circuitry, including transistors T1 and T2. Quantum thermal links act as local heat extractors for heat generating electronic elements, such as resistors R. This architecture illustrates how thermal management circuitry could, in principle, be positioned directly alongside individual electronic or optoelectronic components. Rather than relying on a single bulk cooling solution for the entire chip, each component could be coupled to a tailored thermal circuit that locally controls and redirects heat where it is generated. Credit: Schematic illustration created by the authors
Every electronic and optoelectronic device generates heat, and today that heat is managed almost entirely from the outside. Heatsinks, fans, cold plates and refrigerators are bulky exterior measures bolted onto a chip or package after the fact. They treat heat as a single averaged quantity to be removed in bulk, even though the heat is actually produced locally, component by component, deep inside the circuitry.
The figure shows a space crystal in which several continuous time crystals (CTCs) are placed, indicated by the arrows. They get excited by a red laser beam. Within an area defined by the maximum range for the diffusion of electron spins, all time crystals are synchronized with one another. Credit: Alex Greilich
In January 2024, physicists at TU Dortmund University demonstrated a continuous time crystal in a semiconductor whose oscillations remained stable for hours. In a new study published in Nature Communications, Professor Alex Greilich and his team show that many such time crystals can form in the same material and synchronize their electron-nuclear spin oscillations.
For more than a decade, atomically thin semiconductors have stood out as a promising route beyond conventional silicon. These materials can be just a single atom thick while still offering impressive electrical properties. In principle, they could enable transistors that are smaller, faster, and more energy efficient than today's devices. Yet even as researchers have discovered increasingly capable two-dimensional semiconductor materials, one stubborn engineering problem has remained.
Scientists have captured previously unseen plasma vortices swirling across the surface of the Sun, revealing tiny structures that could help explain how our star stores, moves, and releases magnetic energy.