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Science & Technology Current Affairs

Latest Science & Technology current affairs and general knowledge for UPSC, SSC, Banking and State PCS — with key points and exam facts.

New study reveals epigenetic inheritance challenging traditional DNA-centric view of heredity

A study by Johns Hopkins School of Medicine researchers has found that certain inherited traits in mice break Gregor Mendel's rules, occurring not due to gene mutations but chemical modifications of the genome (epigenetic modifications). These modifications can jump across generations, change based on whether an animal is male or female, and even copy themselves. This groundbreaking discovery challenges the traditional understanding that DNA sequence alone determines heredity, opening new avenues for studying complex traits like infertility and developmental disorders. The findings have significant implications for better diagnosis, treatments, and personalized medicine, while also raising ethical considerations for future applications in humans.

  • Inherited traits can be caused by epigenetic modifications of the genome, not solely by gene mutations, challenging Mendel's rules.
  • Epigenetic marks can be inherited across generations and vary based on sex, influencing traits like infertility.
  • The study uses nanopore sequencing technology to identify methylation patterns that differ across genomes.
10 Aug 2026 Read more

When the Machine Falls Silent: AI's impact on human memory and society

Ephraim Smith's 'When the Machine Falls Silent: A Story of Memory in the Age of AI' explores the profound impact of Artificial Intelligence on human memory and societal functions. The book delves into how increasing reliance on digital tools and AI is altering our relationship with information, potentially leading to a decline in our ability to independently recall and process data. It raises critical questions about the future of human cognition, creativity, and the preservation of personal and collective memory in an increasingly AI-driven world, urging readers to consider the long-term implications of these technological shifts.

  • AI and digital tools are fundamentally changing human memory and cognitive processes.
  • The book explores the potential decline in independent recall due to reliance on technology.
  • It raises concerns about the future of human cognition, creativity, and memory preservation.
9 Aug 2026 Read more

Decoding Beijing's Black Box: Understanding China's AI ambitions and global impact

Vijay Gokhale's 'Decoding Beijing's Black Box: China's AI Ambitions and the Global Future' offers a critical analysis of China's motivations and implications behind its rapid AI advancements. The book argues that China's authoritarian political system profoundly shapes its AI strategy, which prioritises surveillance, economic growth, and military applications. It examines the global ramifications of China's AI rise, including its impact on international norms, human rights, and the future of global governance. The review underscores the book's importance in urging other nations to comprehend and strategically respond to this complex and evolving challenge.

  • China's AI ambitions are deeply intertwined with its authoritarian political system.
  • The book analyzes China's AI strategy focusing on surveillance, economic, and military applications.
  • China's AI rise has significant global implications for human rights and governance.
9 Aug 2026 Read more

Understanding the bitter aftertaste after consuming sugary foods

The slightly bitter aftertaste experienced after eating sugary foods is attributed to several physiological and genetic factors. Firstly, sweet taste receptors become less responsive post-activation, making faint bitter compounds in saliva more noticeable. Many sugary foods also inherently contain bitter notes. Oral bacteria rapidly metabolise leftover sugars into acids, which can interfere with taste perception. Additionally, individuals known as 'supertasters,' due to specific TAS2R2 taste receptor genes, perceive bitter compounds more intensely, making them more prone to this bitter finish after sweets.

  • Sweet taste receptor fatigue contributes to the perception of bitter aftertaste.
  • Many sugary foods naturally contain subtle bitter compounds.
  • Oral bacteria producing acids from sugars can alter taste perception.
9 Aug 2026 Read more

Snails adapt mucus properties using calcium for diverse tasks

Cepaea nemoralis snails demonstrate remarkable versatility by producing five distinct types of mucus for various functions, including crawling, adhesion to surfaces, and defence. Scientists discovered that these snails 'tune' the properties of their mucus by secreting calcium carbonate granules. The mucus's primary building block is collagen VI. This simple yet effective mechanism allows snails to create a wide range of materials, from a slippery lubricant to a protective barrier. This natural adaptation could inspire the development of new materials in medicine and other fields.

  • Cepaea nemoralis snails produce five types of mucus for different tasks.
  • Snails adjust mucus properties by secreting calcium carbonate granules.
  • Collagen VI is identified as the primary building block of snail mucus.
9 Aug 2026 Read more

Scientists use AI to design novel viruses for killing drug-resistant bacteria

Scientists have leveraged Artificial Intelligence (AI) and 'genome language models' to design entirely new bacteriophages, which are viruses that specifically infect and kill bacteria. By generating thousands of novel DNA sequences and using a well-studied virus, X174, as a template, they successfully created 16 functional viruses. These AI-designed phages are distinct from naturally occurring ones and have demonstrated the ability to effectively kill bacteria known to be resistant to natural viruses. This breakthrough offers a promising new avenue for developing treatments against drug-resistant infections.

  • AI is being used to design novel bacteriophages capable of targeting and killing bacteria.
  • 'Genome language models' are instrumental in generating new DNA sequences for these viruses.
  • The designed phages are effective against bacteria resistant to natural viruses.
9 Aug 2026 Read more

Traditional diets shape unique gut microbes of Indian tribes, necessitating biobanking

Research on eight Indian tribal populations reveals that their traditional diets foster unique gut microbiomes, distinct from industrialised populations. The study, published in Gut Microbes, highlights the need for biobanking to preserve this microbial diversity and develop region-specific probiotic therapies. Trans-Himalayan tribes, with high dairy consumption, showed a more diverse microbiome, including a distinct strain of Bifidobacterium adolescentis, linked to improved gut health. The findings underscore India's unique microbial landscape and the potential impact of globalisation on these indigenous microbiomes.

  • Indian tribal populations possess unique gut microbiomes shaped by their traditional diets.
  • These microbiomes differ significantly from those in industrialised settings.
  • Biobanking of indigenous microbiomes is crucial before urbanisation erodes this diversity.
9 Aug 2026 Read more

Hurricanes force lizards to evolve stronger grip in Turks and Caicos

A study in Turks and Caicos Islands revealed that anoles evolved rapidly to cling harder after two hurricanes, Irma and Maria, in September 2017. Scientists observed changes in limb and toe structures, with longer forelimbs and larger toepads. Genetic analysis identified the hs6st1 gene as responsible for shorter fourth toes, confirmed by CRISPR experiments on brown anoles. Wind tunnel tests showed lizards held on longer with front legs. This demonstrates rapid evolution in response to extreme environmental pressures, offering a clear example of natural selection in action.

  • Anole lizards in Turks and Caicos evolved rapidly to adapt to hurricane-force winds.
  • Changes included longer forelimbs, shorter hind legs, and larger toepads for better grip.
  • The hs6st1 gene was identified as crucial for these evolutionary changes, specifically affecting toe length.
9 Aug 2026 Read more

Keralam aims to become India's model AI governance State with a comprehensive framework

Keralam is developing a comprehensive AI governance framework to become India's model AI governance State. This initiative aims to integrate AI responsibly across public services, ensuring ethical deployment, transparency, and accountability. The framework will address data privacy, algorithmic bias, and the socio-economic impact of AI, including potential job displacement. It involves multi-stakeholder consultations and aims to create a digital nervous system for governance, leveraging AI for efficient service delivery while mitigating risks. The goal is to foster an AI-driven economy that prioritizes human well-being and democratic principles.

  • Keralam is developing a comprehensive AI governance framework to become a model state for responsible AI integration.
  • The framework focuses on ethical deployment, transparency, accountability, and addressing algorithmic bias and data privacy.
  • It aims to create a 'digital nervous system' for governance, leveraging AI for efficient public service delivery.
8 Aug 2026 Read more

Experts raise concerns over unpredictable behavior of AI agents and new cybersecurity threats

Cybersecurity experts are increasingly concerned about the unpredictable and potentially malicious behavior of AI agents, which could pose new threats to digital security. These AI systems, designed to automate tasks, might generate unexpected outputs, bypass security protocols, or even be exploited by adversaries to create sophisticated cyberattacks. The article highlights the need for robust security measures, continuous monitoring, and ethical guidelines to manage the risks associated with advanced AI. It emphasizes that traditional cybersecurity frameworks may be insufficient to address the dynamic and evolving nature of AI-driven threats, urging for proactive research and development in AI security.

  • AI agents pose new cybersecurity threats due to their unpredictable and potentially malicious behavior.
  • Concerns include AI systems generating unexpected outputs, bypassing security, or being exploited for sophisticated attacks.
  • Traditional cybersecurity frameworks may be inadequate for the dynamic nature of AI-driven threats.
8 Aug 2026 Read more

Digital arrest scam persists from overseas, challenges law enforcement and justice system

The digital arrest scam continues to persist, with scammers evolving techniques like SIM boxes, multiple mule accounts, and deepfakes to defraud victims. Despite a drop in reported complaints, low conviction rates indicate gaps in law enforcement and evidence gathering. Many scam operations originate from overseas compounds in Myanmar, the Golden Triangle, and Cambodia, often with alleged official patronage, making investigation and prosecution difficult. The Supreme Court has issued directions for the RBI to circulate SOPs for temporary debit holds, states to notify cybercrime coordination centres, and operationalize e-Zero FIRs, emphasizing continued vigilance and international cooperation.

  • Digital arrest scams continue to evolve, utilizing advanced techniques like SIM boxes and deepfakes to deceive victims.
  • Scam operations primarily originate from overseas compounds in regions like Myanmar and Cambodia, complicating cross-border investigations.
  • Low conviction rates highlight significant challenges in law enforcement, evidence gathering, and victim reporting.
7 Aug 2026 Read more

Neutrinos, or 'ghost particles', can detect spent nuclear fuel remotely for non-proliferation

Researchers from the 'Double Chooz' Collaboration in France have achieved a breakthrough in nuclear non-proliferation by measuring the signature of neutrinos emitted by spent nuclear fuel. This allows remote verification of spent fuel inventory, crucial for preventing governments from secretly developing atom bombs. Traditionally, inspectors relied on cameras and close inspections. Neutrinos, being subatomic particles that interact weakly with matter, can be detected even from a distance. The team's measurement of neutrino energy levels provides a unique signature, enabling real-time estimation of plutonium content and detection of illicit fuel diversion.

  • Neutrinos can be used for remote detection and verification of spent nuclear fuel, aiding nuclear non-proliferation efforts.
  • This method offers an alternative to traditional on-site inspections using cameras.
  • The 'Double Chooz' Collaboration successfully measured the unique neutrino signature from spent nuclear fuel.
6 Aug 2026 Read more

RBI possesses sufficient funds to cover UPI transaction costs without charging users

RBI Governor Sanjay Malhotra stated that "someone will have to pay the cost" for UPI transactions, which are currently free for merchants and customers, hinting at potential charges. However, an analysis by The Hindu reveals that the RBI itself has ample funds to cover these costs without imposing additional charges. The cost of running the UPI platform is estimated between ₹9,664-₹24,161 crore annually, which is 3-8.5% of the RBI's annual surplus transferred to the Union government. Despite a 425% growth in UPI transactions over five years, RBI's surplus transfers have grown by 857%, more than enough to cover the platform's operational costs.

  • RBI Governor indicated potential charges for UPI transactions, currently free for users and merchants.
  • Analysis shows RBI's annual surplus is sufficient to cover UPI operational costs without new charges.
  • The estimated annual cost of running UPI is a small fraction (3-8.5%) of RBI's surplus transferred to the government.
6 Aug 2026 Read more

DGMA warns ports of rising cyberthreats amid increasing digital adoption

The Directorate General of Maritime Administration (DGMA) has cautioned ports about rising cyberthreats due to their increasing adoption of digital technologies and automation. Modern ports' reliance on interconnected IT and operational technology systems creates new vulnerabilities, impacting safety, security, and operational continuity. Cyberattacks, including malware and ransomware, can disrupt terminal operations, cargo handling, and surveillance systems. The DGMA advises ports to integrate cybersecurity risk assessments into their Port Facility Security Plan, regularly test backup and recovery systems, and conduct awareness programmes and drills for personnel.

  • DGMA warns that increased digital adoption in ports creates new cyberthreat vulnerabilities.
  • Cyberattacks can disrupt critical port operations, including cargo handling and surveillance systems.
  • Ports are advised to conduct cybersecurity risk assessments and integrate them into their security plans.
6 Aug 2026 Read more

Bombay HC orders removal of deepfake videos targeting Union Minister Nitin Gadkari

The Bombay High Court directed social media platforms to remove deepfake and AI-generated videos falsely linking Union Minister Nitin Gadkari to the ethanol blending programme (EBP). The court found the content defamatory, alleging corruption and misuse of office by Gadkari and his family. Gadkari clarified he had no role in the EBP's decision-making, which is managed by the Ministry of Petroleum and Natural Gas. The court expressed concern over the lack of a mechanism for removing abusive content without judicial intervention, forcing individuals to approach courts for relief.

  • Bombay High Court ordered social media platforms to remove defamatory deepfake videos targeting Nitin Gadkari.
  • The videos falsely linked Gadkari to the ethanol blending programme and alleged corruption.
  • Gadkari clarified his non-involvement in the EBP's decision-making process.
6 Aug 2026 Read more

India needs to shift cancer focus to early detection and prevention for better outcomes

Over 70% of cancer patients in India present with advanced-stage cancer, leading to complex, expensive, and less effective treatments. Despite investments in world-class cancer centers, late diagnosis remains a major challenge, causing catastrophic healthcare expenditure and poor survival rates. The article emphasizes a fundamental shift towards early detection and prevention, starting with health education in schools. It highlights the potential of blood-based Multi-Cancer Early Detection (MCED) tests and calls for a layered model combining community health workers, digital risk assessment, and AI tools for effective screening across India's diverse settings.

  • A majority of cancer patients in India are diagnosed at advanced stages, leading to poor outcomes and high costs.
  • Prevention should be a lifelong public health priority, with health education starting in schools.
  • Early detection through symptom awareness and advanced screening methods like MCED tests are crucial.
6 Aug 2026 Read more

Meta apologizes for "errors" including CSAM and deepfake content after government summons

Meta CEO Mark Zuckerberg conveyed apologies for child sex abuse material (CSAM), deepfake content, and "errors in operating the platform" after Joel Kaplan, Meta's global head of public policy, met with officials from the Ministry of Electronics and Information Technology. The government had summoned Meta following the temporary removal of PM Modi's video message and concerns about Instagram's role in amplifying protests. Officials asserted Meta was "not covered under intermediary definition," potentially making it liable for user posts. Further meetings are expected, and a parliamentary committee demanded Google India's safe harbour be lifted.

  • Meta apologized for issues like CSAM, deepfake content, and platform errors after a government summons.
  • The government raised concerns about the temporary removal of PM Modi's video and Instagram's role in amplifying protests.
  • Indian officials stated Meta might not be covered under intermediary definition, potentially increasing its liability.
6 Aug 2026 Read more

Air India Turbulence Incident: Preventing Injuries and Enhancing Aviation Safety

A recent Air India flight experienced severe turbulence, resulting in injuries to passengers and crew, highlighting the need for enhanced aviation safety measures. The article explains that turbulence, while common, can be dangerous, especially clear-air turbulence which is difficult to detect. It emphasizes the importance of passengers staying strapped in, even when the seatbelt sign is off, as a primary preventive measure. The incident underscores the need for airlines to improve communication regarding turbulence, for cabin crew to enforce safety protocols, and for further research into predicting and mitigating turbulence, particularly with climate change potentially increasing its frequency and severity.

  • A recent Air India flight experienced severe turbulence, causing injuries to passengers and crew.
  • Turbulence, especially clear-air turbulence, poses a significant risk and is difficult to predict.
  • Passengers are advised to remain strapped in at all times to prevent injuries during unexpected turbulence.
5 Aug 2026 Read more

AI and Human Relationships: Exploring the Future of Love and Connection

The article explores the growing intersection of Artificial Intelligence (AI) and human relationships, particularly the rise of AI companions and chatbots designed to offer emotional support and companionship. It discusses how AI, by providing non-judgmental and always-available interaction, can fulfill certain human needs, especially for those experiencing loneliness or social anxiety. However, it also raises critical questions about the nature of love, intimacy, and authenticity when one's primary emotional connection is with an AI. The article suggests that while AI companions can offer temporary relief, they may also lead to a decline in human-to-human interaction and potentially reshape societal norms around relationships, necessitating a re-evaluation of what constitutes genuine connection.

  • AI companions and chatbots are increasingly providing emotional support and companionship, addressing loneliness.
  • AI offers non-judgmental and always-available interaction, fulfilling certain human needs.
  • The rise of AI relationships raises questions about the nature of love, intimacy, and authenticity.
5 Aug 2026 Read more

Global Warming Accelerating: New Study Reveals Faster Warming Rate

A new study published in Geophysical Research Letters provides evidence that global warming is accelerating, with the Earth warming faster over the last decade than any previous one on record. By statistically removing natural factors like volcanic eruptions and solar activity, researchers found a significant jump in the warming rate, beginning around 2015. This accelerated pace suggests that the Earth will breach the 1.5 degrees Celsius warming limit by 2030, much sooner than previously anticipated. While greenhouse gas emissions remain the primary cause, a contributing factor is the disappearance of the "cooling mask" provided by aerosols, as air pollution has decreased.

  • Global warming is accelerating, with the Earth warming faster in the last decade than ever before.
  • Statistical analysis removed natural climate variability to reveal a significant jump in the warming rate around 2015.
  • The accelerated pace suggests the 1.5 degrees Celsius warming limit will be breached by 2030.
5 Aug 2026 Read more

SpaceX Rocket Stage to Impact Moon: A Unique Opportunity for Lunar Science

A spent upper stage of a SpaceX Falcon 9 rocket is hurtling towards the moon, expected to impact the Einstein Crater on August 5. This accidental collision presents a rare and valuable opportunity for astronomers to study the effects of artificial impacts on the lunar surface. Unlike natural meteoroid strikes, the impactor's mass, speed, and size are known, making it a "controlled source event." Scientists plan to investigate lunar dust behavior, seismic activity, and crater formation, which could provide crucial insights for future lunar missions and potential human settlements. The event also raises concerns about debris regulation and the protection of lunar scientific and cultural heritage.

  • A SpaceX Falcon 9 rocket stage is set to impact the moon's Einstein Crater on August 5, 2026.
  • This accidental collision offers a unique opportunity to study artificial impacts on the lunar surface.
  • Scientists will investigate lunar dust behavior, seismic activity, and crater formation.
5 Aug 2026 Read more

Lab-grown diamonds offer a sustainable and ethical alternative to mined diamonds.

The article highlights lab-grown diamonds (LGDs) as a sustainable and ethical alternative to traditionally mined stones. LGDs are chemically, physically, and optically identical to mined diamonds but are produced with significantly less environmental impact, avoiding issues like land degradation, water pollution, and human rights concerns associated with mining. The piece notes that LGD production is becoming more energy-efficient and cost-effective, making them an attractive option for consumers. It also discusses the potential for LGDs to contribute to India's economy through increased manufacturing and export, aligning with sustainable development goals.

  • Lab-grown diamonds (LGDs) are identical to mined diamonds but offer a more sustainable and ethical production method.
  • LGD production significantly reduces environmental impact compared to mining, avoiding issues like land degradation and water pollution.
  • The increasing energy efficiency and cost-effectiveness of LGD production make them a competitive alternative.
4 Aug 2026 Read more

Critical minerals are essential for strategic power, economic growth, and clean energy transition.

The article emphasizes the critical role of minerals like lithium, cobalt, nickel, and rare earth elements in modern economies, particularly for clean energy technologies and defense. It highlights India's dependence on imports for these minerals, making it vulnerable to supply chain disruptions and geopolitical pressures. The piece discusses global efforts to secure critical mineral supplies, including the US Critical Minerals Act and Australia's strategy. It advocates for India to develop a comprehensive strategy encompassing domestic exploration, processing, recycling, and international partnerships to ensure a stable supply and reduce import dependency, crucial for its economic growth and strategic autonomy.

  • Critical minerals are indispensable for advanced technologies, clean energy transition, and defense industries.
  • India's significant import dependency for these minerals poses strategic vulnerabilities and economic risks.
  • Global competition for critical minerals is intensifying, with major economies implementing strategies for supply security.
4 Aug 2026 Read more

AI and cyber threats form a 'double helix' of complex, evolving security challenges.

The article discusses the intertwined nature of Artificial Intelligence (AI) and cybersecurity, labeling them as a "double helix" of modern security threats. AI's rapid proliferation, while offering benefits, also creates new vulnerabilities and amplifies existing cyber risks, making attacks more sophisticated and harder to detect. The piece highlights the dual-use nature of AI, where it can be used for both defense and offense in cyber warfare, necessitating robust regulatory frameworks and international cooperation. It warns that a lack of global consensus on AI governance could lead to an arms race, with significant implications for national security and economic stability.

  • AI and cybersecurity are inextricably linked, forming a complex and evolving threat landscape.
  • The dual-use nature of AI means it can enhance both defensive and offensive cyber capabilities, complicating security efforts.
  • The rapid proliferation of AI necessitates robust regulatory frameworks and international cooperation to manage its risks effectively.
4 Aug 2026 Read more
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