Science & Technology in Everyday Life

China's LineShine supercomputer has debuted at No. 1 on the TOP500 list of the world's most powerful supercomputers, overtaking the United States' El Capitan system. Announced at the ISC High Performance 2026 conference in Hamburg, Germany, LineShine clocked 2.198 exaflops and is the first machine to cross two exaflops using a CPU-only design built entirely on domestic chips. It is the first China-based system to top the list since Sunway TaihuLight in 2017. This article explains what supercomputers and the LINPACK benchmark are, why a CPU-only Chinese win matters, how US export controls and the US–China tech race shape the result, and where India stands through the National Supercomputing Mission.

The United States has directed Anthropic to suspend access to its latest AI models, Fable 5 and Mythos 5, for foreign nationals on national-security grounds, forcing the company to disable the models for all users. The issue is important for UPSC because it links frontier AI, export controls, cybersecurity risks, technological sovereignty, global AI governance and India’s need to build indigenous AI capacity.

The United States has said that China will address American concerns over shortages of rare earths and other critical minerals, including yttrium, scandium, neodymium and indium. However, the latest White House statement reportedly dropped an earlier reference to completely removing China’s export control regime, indicating that Beijing’s broader restrictions are likely to continue. The issue is important for UPSC because rare earths and critical minerals are linked to semiconductors, defence systems, electric vehicles, renewable energy, telecom, data centres and strategic supply-chain security. This article explains China’s rare earth export controls, the importance of indium, why the US sees the development as only a small gain, and what it means for India’s critical mineral strategy.

Google DeepMind, in collaboration with Yale University, has unveiled the C2S-Scale 27B AI model, which generated a completely new scientific hypothesis about how certain drugs can make "cold" cancer tumors more detectable by the immune system. This hypothesis was tested and confirmed through lab experiments on living human cancer cells, marking the first time an AI has proposed and validated a novel biological idea in this way. The discovery, announced on October 16, 2025, and detailed in a bioRxiv preprint, highlights AI's potential to speed up cancer drug research by simulating thousands of possibilities virtually before lab work.

Indian scientists at the Raman Research Institute in Bengaluru have made a major advance in quantum technology by developing methods to generate and certify truly random numbers using a general-purpose quantum computer. This achievement, led by physicist Urbasi Sinha, is the first of its kind ready for real-world use and could lead to unbreakable digital security systems, especially as quantum computers threaten current encryption methods.

Prime Minister Narendra Modi announced at the India Mobile Congress 2025 that India's indigenous 4G technology stack is now ready for export, showcasing the country's telecom self-reliance. This move aims to provide an alternative to China's Digital Silk Road expansion in developing nations, where India has joined the elite group of five countries (Denmark, Sweden, South Korea, China, and India) that have developed their own 4G stack.

The Royal Swedish Academy of Sciences has awarded the 2025 Nobel Prize in Physics to John Clarke, Michel H. Devoret, and John M. Martinis for their groundbreaking discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit. This recognition comes for experiments conducted in the 1980s that showed quantum effects—usually seen only in tiny particles—can occur in larger, hand-held systems, opening doors to advanced technologies like quantum computers and sensors.

The Royal Swedish Academy of Sciences has awarded the 2025 Nobel Prize in Chemistry to three scientists—Susumu Kitagawa, Richard Robson, and Omar M. Yaghi—for their groundbreaking work in developing metal-organic frameworks (MOFs). This recognition highlights how these innovative materials, which create vast empty spaces within molecular structures, are transforming applications in carbon capture, water harvesting, and clean energy storage, addressing key global challenges like climate change and resource scarcity.

The Indian Space Research Organisation (ISRO) has been conducting crucial simulation missions in Bengaluru using a static mock-up simulator to prepare astronaut-designates for India's maiden human spaceflight under the Gaganyaan programme. These simulations, allowing astronauts to experience spacecraft-like conditions for extended periods, are part of the final preparations ahead of the first uncrewed test flight (G1) scheduled for December 2025, featuring the humanoid robot Vyommitra. This development underscores India's push towards self-reliance in space exploration, with the crewed mission now targeted for 2027.