Science & Technology Current Affairs MCQs

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POEM-4, or PSLV Orbital Experiment Module-4, recently re-entered Earth’s atmosphere and fell into the Indian Ocean, as tracked by ISRO’s IS4OM (System for Safe and Sustainable Space Operations Management). It is a space research platform developed by ISRO (Indian Space Research Organisation) using the spent fourth stage (PS4) of the PSLV (Polar Satellite Launch Vehicle) rocket as an orbiting lab. POEM-4 is part of the SpaDeX (Space Docking Experiment) mission and is the fourth in the POEM series, after POEM-3. It has three times more payload capacity than POEM-3, showing major progress in reusing rocket stages for science.

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Health authorities in New South Wales (NSW), Australia, have issued a public alert after a rise in Legionnaires’ disease cases in Sydney, raising fears of contamination in air conditioning systems. Legionnaires’ disease is a serious lung infection caused by Legionella bacteria, usually found in natural water bodies but can also grow in man-made systems like cooling towers. The bacteria can lead to two illnesses: Legionnaires’ disease, a severe pneumonia, and Pontiac fever, a mild flu-like illness. Common symptoms include cough, fever, muscle pain, shortness of breath, and sometimes confusion or diarrhea. It spreads by inhaling contaminated water droplets, not from person to person. There is no vaccine, but antibiotic treatment is effective once diagnosed.

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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.

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BatEchoMon stands for Bat Echolocation Monitoring, India’s first real-time automated bat monitoring system. It was developed by Kadambari Deshpande and Vedant Barje under Jagdish Krishnaswamy at the Indian Institute for Human Settlements (IIHS), Bengaluru. It is part of the Long-Term Urban Ecological Observatory at IIHS’s School of Environment and Sustainability. BatEchoMon detects, records, analyses, and classifies bat sounds using echolocation. It uses an ultrasonic microphone, a Raspberry Pi microprocessor, solar-powered battery, and Wi-Fi unit. It activates at sunset and works through the night using a Convolutional Neural Network (CNN) to identify bat calls.

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Kyasanur Forest Disease (KFD), also known as Monkey Fever, is rising in Shivamogga and Chikkamagaluru districts of Karnataka. It is a tick-borne viral haemorrhagic disease first reported in 1957 from Kyasanur Forest, Karnataka. It is caused by the Kyasanur Forest Disease Virus (KFDV), part of the Flavivirus genus and Flaviviridae family, linked to the tick-borne encephalitis (TBE) complex. The virus spreads through hard ticks (Hemaphysalis spinigera) and affects humans, monkeys, and rodents, but not through human-to-human contact.

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Google has launched its 7th-generation Tensor Processing Unit (TPU), named Ironwood, to improve the performance of Artificial Intelligence (AI) models. TPU is a specialised processor known as an Application-Specific Integrated Circuit (ASIC) developed by Google in 2015. It is designed especially for machine learning and AI tasks. TPUs are made to perform tensor operations, which are the main data structures used in Machine Learning (ML) models. TPUs are faster than Central Processing Units (CPUs) and Graphics Processing Units (GPUs) in AI tasks. They can train complex neural networks in just a few hours.

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The Indian Institute of Spices Research (IISR), Kozhikode, has developed a new turmeric variety called IISR Surya for the masala industry. IISR Surya has a light-coloured rhizome suited for modern turmeric powder production. It was developed after ten years of focused research by IISR scientists through clonal selection from their turmeric germplasm conservatory. The variety offers a 20% to 30% higher yield than existing light-coloured types and can yield up to 41 tonnes per hectare. It contains 2% to 3% curcumin, matching other light-coloured varieties. IISR Surya is recommended for cultivation in Kerala, Telangana, Odisha, Jharkhand, and Arunachal Pradesh. It aims to help farmers, reduce market shortages, and support both domestic and export demand.

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Recently, a new oral antibiotic called gepotidacin showed promising results against drug-resistant gonorrhoea. Gonorrhoea is a sexually transmitted infection (STI), also known as a sexually transmitted disease (STD). It is caused by the bacteria Neisseria gonorrhoeae and is sometimes called ‘the clap’. It is especially common in teenagers and young adults aged 15 to 24. Gepotidacin offers new hope in treating this infection, which is becoming harder to cure with existing antibiotics.

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AI Kiran, an initiative to empower women in Artificial Intelligence (AI), has been launched. The objective of AI Kiran is to create a vibrant AI community where women can thrive as innovators and leaders. It is led by the Office of the Principal Scientific Adviser (PSA) to the Government of India. The initiative highlights the contributions of over 250 women driving advancements in AI in sectors like education and healthcare. The KIRAN (Knowledge Involvement in Research Advancement through Nurturing) Scheme, launched by the Department of Science and Technology (DST), promotes gender equality in science and technology by empowering women.

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China has officially launched the world’s first commercial 10 Gigabit per second (10G) broadband network, setting a new global standard for high-speed wired internet. This new 10G broadband offers speeds over 10 times faster than current fiber-optic networks used around the world. It allows ultra-fast downloads and uploads, very low latency, and high bandwidth capacity. It supports advanced applications like 8K video streaming, cloud gaming, smart cities powered by Artificial Intelligence (AI), and virtual reality.