Science & Technology Current Affairs MCQs

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NASA reported that global sea levels rose faster than expected in 2024. The rise reached 0.59 cm per year, exceeding the expected 0.43 cm. The main causes are ocean warming, which leads to expansion, and meltwater from glaciers and ice sheets. In 2024, thermal expansion caused two-thirds of the rise, shifting from previous years when melting ice was the dominant factor. 2024 was the warmest year on record, with ocean levels at their highest in three decades. Since satellite monitoring began in 1993, global sea levels have risen by 10 cm, with the rate more than doubling.

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Subacute Sclerosing Panencephalitis (SSPE) is a rare but serious brain disorder linked to measles (rubeola) infection. It remains a health concern in Lucknow and Uttar Pradesh due to low measles vaccination coverage. SSPE appears years after measles infection, even in those who seemed fully recovered. It is caused by an abnormal immune response or a variant form of the measles virus. This leads to long-term brain inflammation, often resulting in death. SSPE is rare worldwide but more common in unvaccinated regions. It mostly affects children and adolescents, with males at higher risk.

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IIT Guwahati researchers developed AI-powered robots for border surveillance. The robots, created by Da Spatio Rhobotique Laboratory Pvt. Ltd (DSRL), offer real-time monitoring in tough terrains. Defence Research and Development Organisation (DRDO) acknowledged their potential for India’s defence. The Indian Army is conducting field trials for deployment. Unlike drones and stationary cameras, these robots overcome terrain, weather, and endurance challenges. Features include pole traversal, obstacle navigation, and AI-driven reconnaissance. The system enhances threat detection and security. This innovation supports India’s vision of self-reliance in defence technology.

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African Swine Fever (ASF) has resurged in Mizoram, causing 41 more pig deaths, raising the total toll to 503 since March 20. ASF first emerged in Mizoram in Lungsen village, Lunglei, on March 21, 2021, and has since become endemic. The causative agent of African Swine Fever (ASF) is the African Swine Fever Virus (ASFV). ASF is a highly contagious and fatal viral disease affecting domestic and wild pigs but poses no risk to humans. The virus can spread through contaminated clothing, equipment, or vehicles, threatening pig populations. There is no treatment or vaccine, making prevention and strict biosecurity measures the only effective control methods.

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Researchers in China successfully transplanted a gene-modified pig liver into a human with brain death to evaluate its function. Xenotransplantation involves transplanting cells, tissues, or organs from non-human animals into humans. Early attempts at xenotransplantation began in the 1980s with heart transplants. Genetic modifications are necessary to prevent immune rejection of animal organs in humans. Post-transplant monitoring is essential to assess organ function and immune responses.

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Vibe coding became a trending term in Silicon Valley after being coined by OpenAI co-founder Andrej Karpathy. It refers to using Generative Artificial Intelligence (AI) not just for coding assistance but to generate entire applications. Users communicate with Large Language Model (LLM)-based systems like ChatGPT in natural language to create apps. Andrej Karpathy, a founding engineer at OpenAI and former head of AI at Tesla, introduced the term. Vibe coding allows people to build tools, apps, and services without deep programming knowledge. However, it raises security concerns as AI-generated code may lack efficiency, scalability, and proper security frameworks. AI code generators might produce functional code but may not consider optimization, cost, or security risks.

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The European Space Agency (ESA) will launch the Biomass satellite mission by the end of April 2025 using the Vega C rocket from French Guiana. Biomass is the seventh Earth Explorer satellite under ESA’s climate and Earth systems programme. It will study global forests, measuring carbon levels and forest health to understand their role in the carbon cycle. The satellite uses radar to quantify forest biomass and carbon content from space. It will also create detailed 3D models of forest structures and monitor changes over time, helping climate research and forest conservation efforts.

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Indian Institute of Technology Kharagpur (IIT-Kgp) developed an energy-efficient graphene-based technology for oil-water separation to manage oil spills safely and effectively. Graphene is a single atomic layer of graphite, an allotrope of carbon with tightly bonded atoms arranged in a hexagonal lattice. It is about 200 times stronger than steel, lightweight, transparent, and highly elastic with excellent thermal conductivity and flexibility. The new technology uses graphene’s unique properties to clean oil spills efficiently with less energy and no toxic residue. Graphene is also used in making microchips, batteries, and biomedical devices due to its versatile nature.

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Nature Genetics published results from the GenomeIndia Project, which sequenced whole genomes of about 10,000 people from 85 different population groups, including 32 tribal and 53 non-tribal communities across India. The study found 180 million genetic variants, with 130 million on autosomes, which are non-sex chromosomes, and 50 million on sex chromosomes, X and Y. Some of these variants are linked to diseases, some are rare, and many are unique to India or certain communities. The GenomeIndia Project was launched in 2020 by the Department of Biotechnology (DBT) to map India’s genetic diversity.

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Scientists at Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST) in Thiruvananthapuram have developed a new real-time test for Tuberculosis (TB) called the real-time Loop-Mediated Isothermal Amplification (rt-LAMP) assay. The rt-LAMP assay is similar to GeneXpert and Truenat, with high sensitivity to detect even 10 TB DNA copies per microlitre. Unlike Reverse Transcription Polymerase Chain Reaction (RT-PCR), which needs three temperature cycles, rt-LAMP works at a single temperature, making it simpler and faster. It uses six primers for stronger DNA detection, compared to two in RT-PCR. The use of Syto 16 fluorescent dye avoids false negatives. Results are available in just 10–20 minutes, helping in early TB diagnosis.