Meridian
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Meridian: Metric-Semantic Primitive Matching for Cross-View Geo-Localization Beyond Urban Environments
Announce Type: new Abstract: Successful robot automation requires accurate global localization to support repeatability, task planning, goal specification, and safe operation. However, reliable localization in GNSS-denied environments remains an open problem. Overhead aerial imagery offers a promising solution, but existing approaches primarily target structured urban environments and have been rarely demonstrated in unstructured natural terrain.
Earth’s east–west albedo symmetry
Nature, Published online: 03 June 2026; doi:10.1038/s41586-026-10624-2Analysis of a 25-year satellite record shows that Earth has a persistent east–west albedo symmetry split at 27° E, with clear-sky albedo, cloud radiative effect and open-ocean fraction exhibiting a triple symmetry around this meridian.
Evidence-Based Intelligent Diagnostic and Therapeutic Visualization System with Large Language Models: Multi-Turn Interaction and Multimodal Treatment Plan Generation
arXiv:2606.06869v1 Announce Type: new Abstract: Aim: Existing AI-assisted traditional Chinese medicine diagnostic tools suffer from opaque reasoning processes, passive interaction, and limited treatment plan presentation. This study proposes a knowledge-enhanced visual diagnostic system to improve the transparency and interpretability of syndrome differentiation and treatment. Methods: The system is built upon a Neo4j knowledge graph comprising 241 syndromes, 1,263 symptoms, and 2,485 relations.
Rainfall near 700 mm marks turning point in ecosystem nitrogen retention
Rainfall near 700 mm marks turning point in ecosystem nitrogen retention Stephanie Baum Scientific Editor Andrew Zinin Lead Editor In a study published in Nature Geoscience, a research team led by Prof. Liu Lingli from the Institute of Botany of the Chinese Academy of Sciences (IBCAS) has identified a mean annual precipitation (MAP) threshold of approximately 700 mm, beyond which the dominant controls on ecosystem nitrogen retention shift. Researchers used naturally occurring soil nitrogen...
Understanding Earth's hidden east-west symmetry could improve climate models
June 4, 2026 report Understanding Earth's hidden east-west symmetry could improve climate models Paul Arnold Author Gaby Clark Scientific Editor Robert Egan Associate Editor Earth is divided into two halves: the Northern and Southern Hemispheres. Both reflect equal amounts of sunlight (albedo) even though they have different landmasses and weather patterns, especially cloud distribution. Why this is so is an ongoing mystery waiting to be solved.
American software giant Intuit becomes S&P 500’s worst performer this year
American software giant Intuit has become the worst-performing stock in the S&P 500 this year, as investors worry that a new wave of AI-powered tax services could challenge the company's flagship TurboTax business. The company’s stock has fallen about 51% so far in 2026, even as CEO Sasan Goodarzi continues to defend the company's AI-focused strategy, saying during Intuit's third-quarter 2026 earnings call that the company had made a major bet on artificial intelligence. "When it comes down...
Earth has a mysterious triple symmetry that may influence its climate
A line that runs through Africa, Europe, Alaska and both poles divides Earth into two halves that reflect the same amount of light – and this newly discovered symmetry may play a critical role in the planet’s climate. It was previously known that the northern and southern hemispheres have almost equal reflectivity, or albedo, but Jianhao Zhang at the National Oceanic and Atmospheric Administration in the US and his colleagues have now uncovered a second line of symmetry along the 27° east...