Science & Technology Current Affairs

Background: The Dhanush is a 155mm/52 calibre towed artillery gun developed by the Ordnance Factory Board (OFB) in India. It is an indigenous upgrade based on the Bofors FH-77B design, aiming to enhance the firepower and operational capabilities of the Indian Army. Current Context: The Dhanush howitzer has recently concluded its final user trials, conducted by the Indian Army under stringent conditions. These trials are crucial for assessing the weapon system's performance, reliability, and suitability for induction into active service. The system is designed with advanced features for increased range, accuracy, and operational efficiency. Impact: The successful completion of these trials marks a significant milestone towards the potential induction of the Dhanush howitzer into the Indian Army. This development reinforces India's self-reliance in defense manufacturing and aims to significantly bolster the artillery's combat effectiveness, providing a modern and indigenous solution to meet the Army's evolving requirements.

Background: India has been striving for self-reliance in defense manufacturing, particularly in complex naval platforms. The indigenous aircraft carrier project, INS Vikrant, was a significant step towards this goal, aimed at enhancing the Indian Navy's operational capabilities and reducing dependence on foreign suppliers. The carrier was designed by the Indian Navy's Directorate of Naval Design and built by Cochin Shipyard Limited (CSL). Current Context: INS Vikrant, India's first indigenous aircraft carrier, has successfully completed its extensive maiden sea trials. These trials involved rigorous testing of the ship's hull, propulsion, power generation, and weapon systems under various sea conditions. The successful completion marks a critical milestone, bringing the carrier closer to its commissioning into the Indian Navy. This achievement underscores India's growing prowess in complex shipbuilding and defense technology. Impact: The successful sea trials of INS Vikrant are a major boost to India's maritime security and its ambition to become a net security provider in the Indian Ocean Region. It enhances the Indian Navy's capability to project power and conduct complex operations. Furthermore, it strengthens the 'Make in India' initiative in the defense sector, fostering indigenous design, development, and manufacturing capabilities, and potentially opening avenues for defense exports.

Background: The rapid global proliferation of Generative AI models presents unprecedented opportunities alongside significant ethical, societal, and economic challenges. Concerns range from data privacy, intellectual property, and misinformation to bias and potential job displacement. Nations worldwide are grappling with regulating this transformative technology without stifling innovation, leading to a global discourse on responsible AI governance frameworks. Current Context: On April 9, 2026, the Ministry of Electronics and Information Technology (MeitY) released India's comprehensive draft policy for regulating Generative AI. The policy proposes a multi-stakeholder approach, emphasizing transparency, accountability, and user safety. Key provisions include mandatory impact assessments for high-risk AI applications, clear labeling requirements for AI-generated content, and establishing an independent regulatory body. Impact: This policy is poised to establish India as a proactive leader in responsible AI governance, balancing innovation with necessary safeguards. It aims to build public trust in AI systems, protect citizens from potential harms, and ensure equitable access to AI benefits. The framework could influence global AI regulatory standards and foster a secure environment for AI adoption across various sectors, while encouraging domestic innovation within ethical boundaries.

Background: India's National Quantum Mission (NQM), approved in 2023 with a substantial outlay, aims to position the country at the forefront of quantum technologies. The mission focuses on developing quantum computing, communication, sensing, metrology, and materials. Its strategic objective is to foster a robust ecosystem for research, development, and commercialization, building indigenous capabilities and reducing reliance on foreign technologies. Current Context: On April 9, 2026, the Ministry of Science & Technology announced significant progress under the NQM. This included the establishment of new Quantum Technology Hubs across premier academic institutions and the successful demonstration of a 100-qubit quantum processor prototype by an Indian consortium. New international collaborations were also unveiled, alongside increased funding for quantum startups. Impact: This advancement is expected to significantly bolster India's scientific and technological prowess, creating new avenues for high-tech employment and fostering a knowledge-based economy. It will have profound implications for sectors like defense, healthcare, finance, and cybersecurity, offering unprecedented computational power and secure communication. The progress reinforces India's commitment to self-reliance and enhances its global standing.

Background: India is committed to transitioning towards cleaner energy sources to combat climate change and reduce its reliance on fossil fuel imports. Green hydrogen, produced from renewable energy sources through electrolysis, is seen as a crucial element in decarbonizing various sectors of the economy. Current Context: The Union Cabinet has approved the National Green Hydrogen Mission, aiming to make India a global hub for the production, utilization, and export of green hydrogen. The mission outlines a strategic roadmap with significant financial outlays and policy support to foster the development of the green hydrogen ecosystem. Key components include incentives for manufacturing electrolyzers and hydrogen production, as well as support for pilot projects. Impact: This mission is expected to significantly reduce India's dependence on imported fossil fuels, leading to substantial savings in foreign exchange. It will create new employment opportunities in manufacturing, research, and development. Furthermore, it will play a pivotal role in achieving India's climate commitments, reducing greenhouse gas emissions, and promoting sustainable industrial growth across sectors like refining, fertilizers, and mobility.

Background: India has been progressively enhancing its naval capabilities, with a strong emphasis on indigenous shipbuilding. The development of an indigenous aircraft carrier has been a long-standing strategic objective to ensure maritime security and project power. INS Vikrant, built by Cochin Shipyard Limited, represents a significant leap in this direction. Current Context: INS Vikrant, India's first indigenously designed and built aircraft carrier, has successfully completed its maiden voyage. This milestone signifies the culmination of years of design, construction, and testing, demonstrating India's advanced shipbuilding capabilities. The carrier is equipped with a state-of-the-art flight deck and a range of modern aviation facilities. Impact: The successful maiden voyage of INS Vikrant is a major boost to India's defense preparedness and self-reliance in naval technology. It enhances the Indian Navy's operational reach and combat effectiveness, allowing for greater power projection in the Indian Ocean Region and beyond. This achievement also strengthens India's position as a significant maritime power and promotes indigenous defense manufacturing.

Background: The search for exoplanets, planets outside our solar system, is a major focus of modern astronomy. Identifying planets within the 'habitable zone' of their stars – the region where temperatures could allow liquid water to exist on the surface – is crucial in the quest to find life beyond Earth. These discoveries help us understand planetary formation and the diversity of planetary systems. Current Context: On April 7, 2026, astronomers announced the discovery of a new exoplanet, designated 'TOI-700 e', orbiting a red dwarf star approximately 100 light-years away. This planet is classified as a 'Super-Earth', meaning it is larger than Earth but smaller than Neptune. Crucially, TOI-700 e resides within the habitable zone of its star, and initial analyses suggest it could potentially harbor liquid water on its surface. The planet was detected using data from NASA's Transiting Exoplanet Survey Satellite (TESS) and confirmed through ground-based observations. Its discovery adds to the growing list of potentially habitable worlds and provides a prime target for further study with advanced telescopes like the James Webb Space Telescope. Impact/Significance: The discovery of potentially habitable exoplanets like TOI-700 e fuels scientific curiosity and the ongoing search for extraterrestrial life. For competitive exams, understanding the concept of exoplanets, habitable zones, and the methods used for their detection is important. This finding contributes to our understanding of planetary habitability and the prevalence of Earth-like worlds in the galaxy. It underscores the importance of space exploration and the technological advancements that enable such discoveries. This topic is relevant for UPSC Prelims (Science & Tech) and general awareness sections of other exams.

Background: The transportation sector is a major contributor to greenhouse gas emissions and air pollution. The transition to cleaner fuels is essential for achieving climate goals and improving urban air quality. Green hydrogen, produced through electrolysis powered by renewable energy, is emerging as a promising alternative fuel for heavy-duty transport due to its zero-emission nature and high energy density. Current Context: On April 7, 2026, India flagged off its first 'Green Hydrogen' powered bus in a pilot project aimed at exploring the feasibility of this technology for public transportation. This bus utilizes a hydrogen fuel cell system that converts hydrogen into electricity, with water vapor as the only byproduct. The hydrogen used for this bus is produced through electrolysis powered by renewable energy sources, making the entire cycle 'green'. The pilot project, likely conducted in a major metropolitan area, will assess the performance, efficiency, and infrastructure requirements for operating hydrogen fuel cell buses on a larger scale. This initiative aligns with India's National Green Hydrogen Mission. Impact/Significance: The successful demonstration of a green hydrogen-powered bus is a significant step towards decarbonizing India's transport sector. For competitive exams, understanding the concept of green hydrogen, its production methods, and its applications in sustainable transportation is important. This technology offers a potential solution for reducing reliance on fossil fuels in heavy-duty vehicles like buses and trucks, which are difficult to electrify effectively. It supports India's climate commitments and its ambition to become a global hub for green hydrogen production and utilization. This topic is relevant for UPSC Mains (GS-III Environment, Science & Tech) and general awareness sections of other exams.

Background: Urban mobility is a critical challenge for rapidly growing cities worldwide. Traffic congestion, pollution, and inefficient public transportation systems lead to significant economic losses and reduced quality of life. Artificial Intelligence (AI) offers powerful tools to optimize transit operations, improve passenger experience, and enhance overall urban mobility. Current Context: On April 7, 2026, Bengaluru, India's tech capital, launched its first AI-powered public transit system. This initiative integrates AI algorithms into the city's bus and metro networks to optimize routes, schedules, and passenger flow. The system uses real-time data from sensors, GPS, and passenger feedback to dynamically adjust bus timings, predict demand, and manage traffic signals for public transport priority. AI-driven chatbots are also deployed to provide passengers with real-time information, personalized journey planning, and instant support. The project aims to reduce travel times, minimize waiting periods, and improve the overall efficiency and attractiveness of public transportation. Impact/Significance: The successful implementation of an AI-powered public transit system in Bengaluru could serve as a model for other Indian cities and urban centers globally. For competitive exams, understanding the application of AI in urban planning and smart city initiatives is important. This development highlights how AI can be leveraged to address complex urban challenges, leading to more sustainable, efficient, and citizen-centric transportation. It has implications for reducing carbon emissions, improving air quality, and enhancing the economic productivity of cities. This topic is relevant for UPSC Mains (GS-III Urbanization, Technology) and general awareness sections of SSC and Banking exams.

Background: Inherited retinal diseases (IRDs) are a group of genetic disorders that cause progressive vision loss, often leading to blindness. Many of these conditions are caused by mutations in specific genes responsible for the function of photoreceptor cells in the retina. Traditional treatments for IRDs are limited, and gene therapy has emerged as a promising avenue for correcting the underlying genetic defects. Current Context: As of April 7, 2026, clinical trials utilizing CRISPR-based gene editing technology for treating certain forms of inherited blindness have reported highly encouraging results. Researchers have successfully used CRISPR-Cas9 to precisely edit faulty genes within the retinal cells of patients, restoring partial or significant vision in a subset of participants. The therapy involves delivering the CRISPR-Cas9 system directly into the eye to correct the specific genetic mutation causing the blindness. Early-stage trials have demonstrated safety and efficacy, with patients experiencing improved visual acuity and light sensitivity. Further large-scale trials are underway to confirm these findings and expand the application to other IRDs. Impact/Significance: The success of CRISPR-based gene editing for genetic blindness represents a major breakthrough in precision medicine and the treatment of genetic disorders. For competitive exams, understanding the basics of gene editing technologies like CRISPR, their applications in healthcare, and the ethical considerations involved is vital. This development offers hope for millions affected by IRDs and paves the way for similar gene editing therapies for other genetic diseases. It highlights the transformative potential of biotechnology in addressing unmet medical needs and improving human health. This topic is highly relevant for UPSC Mains (GS-III Science & Tech, GS-II Health) and can also appear in general awareness sections of other exams.