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Catalyst that changes itself could make green hydrogen cheaper
Scientists in Bengaluru have discovered that a catalyst used to produce green hydrogen does something unexpected while on the job: it changes itself. The finding by researchers at the Centre for Nano and Soft Matter Sciences (CeNS), led by Neena S John and PhD scholar Palash Jyoti Gogoi, could help in designing more efficient and durable systems for producing hydrogen, a fuel widely seen as an important part of the transition away from fossil fuels. Hydrogen can be produced by splitting...
Do galaxies have a 'kill switch' that makes them stop growing?
Do galaxies have a 'kill switch' that makes them stop growing? Above a certain threshold, galaxies stop growing , no matter how much raw material they have on hand. The question is: what flips the switch?
Green growth claims are overstated—our study shows three reasons why
Green growth claims are overstated—our study shows three reasons why Lisa Lock Scientific Editor Andrew Zinin Lead Editor A holy grail of environmental policy is an economy that delivers prosperity without requiring the ever-increasing consumption of raw materials. Increasing incomes while reducing environmental pressures hinges on the "decoupling" of energy emissions from economic growth. Some countries in the global economy are moving in the right direction.
DynaTree: Dynamic Agentic Retrieval Tree for Time-Sensitive News Retrieval
arXiv:2605.31377v1 Announce Type: new Abstract: Agentic Retrieval-Augmented Generation improves retrieval by integrating planning, tool use, and iterative reasoning, but existing agentic RAG methods often couple semantic expansion with retrieval decisions in short-horizon inference loops, leading to high inference cost and limited suitability for time-sensitive news retrieval. We propose DynaTree, a two-stage framework for efficient and adaptive news retrieval. In the offline stage, DynaTree...
Scientists discover why ozempic may not work for some people
Scientists discover why ozempic may not work for some people A hidden genetic quirk may be making some people surprisingly resistant to the benefits of blockbuster GLP-1 diabetes drugs. - Date: - June 5, 2026 - Source: - Stanford Medicine - Summary: - Scientists have identified genetic variants that may make some people less responsive to GLP-1 drugs used to treat Type 2 diabetes.
Planet nine mystery deepens as new discovery challenges hidden planet theory
Planet nine mystery deepens as new discovery challenges hidden planet theory A hidden giant planet may be lurking beyond Neptune—but every new discovery seems to deepen the mystery. - Date: - June 8, 2026 - Source: - The Conversation - Summary: -
Modern-day Brahmastra? How hypersonic missiles could change the rules of war
Operation Sindoor demonstrated how a supersonic weapon flying at a speed of nearly Mach 3 (3,700 kmph), or five times the speed of sound, is nearly impossible to stop. A missile flying at low level would be detected by a ground-based radar at a distance of 15 km and, at Mach 3, this would provide an early warning of around 15 seconds to impact. This compresses the decision cycle of an air defence commander.
DLO-Lab: Benchmarking Deformable Linear Object Manipulations with Differentiable Physics
arXiv:2606.04206v1 Announce Type: new Abstract: We address the challenge of enabling robots to manipulate deformable linear objects (DLOs), such as ropes, cables, and rubber bands. Prior work has primarily focused on narrow, task-specific problems, often relying on real-world demonstrations or handcrafted heuristics. Such approaches, however, struggle to scale to the wide variety of materials and tasks encountered in practice, and collecting sufficiently diverse real-world data is often...
The Last Evolution, by John W Campbell Jr. (1932)
The Project Gutenberg EBook of The Last Evolution, by John Wood Campbell This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.org
Can You Stop a Hypersonic Missile?
Can You Stop a Hypersonic Missile? The headlines say yes. Patriot crews shot down a Kinzhal over Kyiv on the night of May 4, 2023.