The travelling salesman problem (TSP) remains one of the most challenging NP‐hard problems in combinatorial optimisation, with significant implications for logistics, network design and route planning ...

2025 was the third hottest year on record, but thousands of cities saw record heat and one broke a record for cold. By Harry Stevens and Eric Niiler Last year was Earth’s third hottest globally, but ...

There are points in time at which a well-known technology, which has been used and gradually improved for decades, reaches its physical limitations, forcing a shift towards dramatically different ...

Markets News, Dec. 24, 2025: S&P 500 Sets All-Time High, Stocks Rise in Shortened Session; Gold, Silver Hit New Records ...