đŸ’„Join UPSC 2027,2028 Mentorship (July Batch) + XFactor Notes & Microthemes PDF

Subject: Science and Technology

  • What is Uranium Enrichment?

    Why in the News?

    Iran’s supreme leader recently said Tehran has limited uranium enrichment to 60% U-235 and will not pursue further enrichment to ~90% (weapons grade).

    About Uranium Enrichment:

    • What is it: The process of increasing the proportion of U-235 isotope in uranium samples. Natural uranium has only 0.7% U-235, while the rest is mostly U-238.
    • Types of Enrichment:
      • Low-Enriched Uranium (3–5%): Used in civilian nuclear power reactors.
      • Highly Enriched Uranium (HEU, >20%): At 90%+ enrichment, uranium becomes weapons-grade, usable for efficient nuclear weapons.
    • Methods: Physical separation methods such as gas centrifuges, requiring advanced infrastructure and technology.
    • Implications:
      • Low enrichment: Controlled power generation.
      • High enrichment: Proliferation risks, shorter path to nuclear weapons capability.

    What is Uranium Enrichment?

    Controversy about Iran’s Pursuit:

    • Declared Program: Iran enriches uranium to 60% U-235, claiming peaceful purposes, but insists it will not pursue 90%+ enrichment.
    • Global Concerns:
      • Civilian irrelevance: 60% has no reactor use, only shortens the “breakout time” to weapons-grade.
      • IAEA Monitoring: International Atomic Energy Agency reports show significant 60% stockpiles, heightening suspicion.
    • Geopolitical Context:
      • Joint Comprehensive Plan of Action (2015) capped enrichment at 3.67% but collapsed after U.S. withdrawal in 2018.
      • Western governments see 60% enrichment as undermining trust, while Iran argues it is a deterrence and bargaining tool.
    • Strategic Dimension: Keeps Iran on the nuclear threshold, enabling leverage in negotiations and projecting deterrence without overt weaponisation.
    [UPSC 2023] Consider the following statements:

    Statement-I: India, despite having uranium deposits, depends on coal for most of its electricity production.

    Statement-II: Uranium, enriched to the extent of at least 60%, is required for the production of electricity.

    Which one of the following is correct in respect of the above statements?

    (a) Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I

    (b) Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-1

    (c) Statement-I is correct but Statement-II is incorrect *

    (d) Statement-I is incorrect but Statement-II is correct

     

  • Delhi to witness Artificial Rain through Cloud Seeding

    Why in the News?

    The Delhi government is planning to trial cloud-seeding to trigger artificial rain to combat air pollution ahead of winters.

    About Cloud Seeding:

    • About: It is a microclimate management technique aimed at altering precipitation patterns by dispersing substances into clouds to stimulate rainfall or snowfall.
    • Why it is used: It is used to mitigate hail, disperse fog, and either induce precipitation or prevent it from occurring in subsequent days.
    • Techniques include:
      • Static Cloud Seeding: Chemicals are introduced into cold clouds already containing supercooled water droplets, encouraging the formation of ice crystals.
      • Hygroscopic Cloud Seeding: Salts are sprayed into the base of warm clouds to act as condensation nuclei, increasing the number and size of water droplets.
      • Dynamic Cloud Seeding: This method involves boosting vertical air currents to enhance moisture passage through the clouds, leading to more rain.
    • Common Cloud Seeding Chemicals:
      • Silver iodide (AgI): Preferred for its ice-like crystalline properties.
      • Potassium iodide (KI): Functions similarly to silver iodide.
      • Dry ice (solid CO₂): Used to rapidly cool cloud droplets, aiding rain formation.
      • Liquid propane: Used in specific cloud types, effective at higher temperatures.
      • Sodium chloride and calcium chloride: Used in hygroscopic (warm) cloud seeding methods.
      • Bismuth tri-iodide (BiI₃): Sometimes used based on experimental or environmental considerations.
    • Dispersion methods range from aircraft and ground-based generators to newer approaches like drones delivering electric charges or infrared laser pulses.

    Limitations: 

    • Concerns persist regarding the potential accumulation of seeding agents in sensitive ecosystems, although detailed studies have shown negligible impacts.
    • The chemicals used, such as silver iodide, may potentially damage the environment and cause health issues like iodine poisoning in high concentrations
    [UPSC 2025] Artificial way of causing rainfall to reduce air pollution makes use of:

    (a) silver iodide and potassium iodide *

    (b) silver nitrate and potassium iodide

    (c) silver iodide and potassium nitrate

    (d) silver nitrate and potassium chloride

     

  • Roadmap for India’s Fusion Power Plan

    Why in the News?

    Researchers at the Institute for Plasma Research (IPR), Gandhinagar have released a roadmap for India’s fusion programme, envisioning the Steady-State Superconducting Tokamak-Bharat (SST-Bharat) as the country’s first fusion electricity generator.

    Back2Basics: ITER and India’s Contribution in ITER

    • ITER (International Thermonuclear Experimental Reactor): It is the world’s largest nuclear fusion project, based in France, involving 35 nations.
      • What is Nuclear Fusion: It is the process where light atomic nuclei, like hydrogen, combine to form a heavier nucleus, releasing a tremendous amount of energy, as seen in the Sun and stars.
    • Aim: Demonstrate safe, carbon-free fusion energy by achieving Q = 10 (500 MW output from 50 MW input).
    • Uses Tokamak design, heating plasma to 150 million °C with superconducting magnets.
    • India joined as a full partner in 2005, contributing 9% of ITER hardware (~â‚č17,500 crore).
    • Major Indian contributions:
      • Partnership: Member since 2005, contributes 9% of hardware (~â‚č17,500 crore) with full IP rights.
      • Cryostat (3,800 tonnes, world’s largest vacuum vessel) – fabricated by L&T in Gujarat.
      • Superconducting magnets, cryogenic systems, RF heating systems, diagnostics, and shielding modules.
      • R&D on lithium-lead breeder blankets for tritium self-sufficiency in fusion reactors.
    • ITER serves as a training ground for Indian scientists, engineers, and industry, strengthening the country’s precision engineering and high-tech capabilities.

    Roadmap for India’s Fusion Power Plan:

    • Vision: Outlined by the Institute for Plasma Research (IPR), Gandhinagar, aligned with India’s Net Zero 2070 goal.
    • Strategy: Transition from fusion–fission hybrids (SST-Bharat) to a full fusion demonstration reactor (INDRA) by 2060.
    • Phased Targets:
      • 2025–2035: ITER participation, validation of deuterium-tritium (D–T) fueling, superconducting magnets, and plasma control.
      • 2035–2060: Build INDRA (500 MWe, Q > 20), continuous operation >6 months, tritium breeding ratio >1.1.
      • Post-2060: Commercial-scale fusion plants, target 50 GW fusion capacity by 2100, offsetting ~750 MT CO₂ annually.
    • Hybrid Approach: Fusion neutrons to drive thorium-based subcritical assemblies until pure fusion matures.
    • Innovations: Digital twins of tokamaks, AI-assisted plasma confinement, and radiation-resistant materials.
    • Global Context: UK STEP targets 2040, US startups 2030s, China’s EAST plasma records; India aims for 2060 cautiously.

    About Steady-State Superconducting Tokamak-Bharat (SST-Bharat):

    • Design: Planned as India’s first fusion electricity generator, a fusion–fission hybrid.
    • Output: 130 MW total; 100 MW from fission, 30 MW from fusion.
    • Target: Q-Value = 5 (fusion output/input ratio), vs ITER’s goal of Q = 10.
    • Cost: Estimated at â‚č25,000 crore.
    • Features: Superconducting magnets, advanced plasma control, hybrid breeding design to generate fuel and reduce waste.
    • Legacy: Builds on SST-1 tokamak, which achieved 650 ms confinement (designed for up to 16 min).
    • Goal: Pave way for INDRA (250 MW, Q = 20) by 2060.
    [UPSC 2016] India is an important member of the ‘International Thermonuclear Experimental Reactor’. If this experiment succeeds, what is the immediate advantage for India?

    Options: (a) It can use thorium in place of uranium for power generation

    (b) It attain a global role in satellite-navigation

    (c) It can drastically improve the efficiency of its fission reactors in power generation

    (d) It can build fusion reactors for power generation*

    [UPSC 2025] The fusion energy programme in India has steadily evolved over the past few decades. Mention India’s contributions to the international fusion energy project International Thermonuclear Experimental Reactor (ITER). What will be the implications of the success of this project for the future of global energy?

     

  • Optical Computing and AI with Light

    Why in the News?

    Finnish researchers showed that nonlinear optical fibres can perform AI tasks efficiently, advancing optical computing.

    About Optical Computing:

    • Overview: A computer that uses light (photons) instead of electricity (electrons) to process data.
    • Why Important: Light is faster, makes less heat, and carries more data at once.
    • Technology Used: Runs through optical fibres, the same cables that carry internet data.
    • Main Challenge: Hard to control how light behaves, especially when it gets very strong and non-linear (changes colour, merges, or spreads).

    Recent Breakthrough:

    • Research:
      • Turned images into light pulses.
      • Sent them through optical fibre where the light changed.
      • These changes acted like a hidden computing layer.
      • The system read the light at the other end to classify the images.
    • Results: Reached 91–93% accuracy, close to normal AI computers.

    How can it help AI working?

    • Energy-efficient AI hardware: Can make faster and greener AI systems in the future.
    • Tech needs: New tools like photonic chips and optical neural networks before large-scale use.
    [UPSC 2022] Which one of the following is the context in which the term “qubit” is mentioned?

    (a) Cloud Services (b) Quantum Computing* (c) Visible Light Communication Technologies (d) Wireless Communication Technologies

     

  • Extreme Nuclear Transients (ENTs) and the Big Bang

    Extreme Nuclear Transient

    Why in the News?

    New research by the University of Hawaii has discovered Extreme Nuclear Transients (ENTs), the most powerful explosions since the Big Bang, surpassing even gamma-ray bursts (GRBs) in energy output.

    Back2Basics: Big Bang

    • Proponent: In 1927 by Georges LemaĂźtre.
    • Timeline: Universe originated ~13.7–13.8 billion years ago from a singularity.
    • Phases: Began with cosmic inflation, followed by expansion, cooling, and formation of matter, light, and four fundamental forces.
    • Cosmic Evolution: Led to atoms, stars, galaxies, and planets; universe still expanding.
    • Evidence: Supported by cosmic microwave background radiation and Hubble’s observations of galaxy redshifts.

    About Extreme Nuclear Transients (ENTs):

    • Discovery: First reported by astronomers at the University of Hawaii’s Institute for Astronomy (IfA).
    • Cause: Triggered when massive stars (≄3 times Sun’s mass) are torn apart by supermassive black holes at galactic centers.
    • Energy Output: Release ten times more energy than gamma-ray bursts (GRBs), earlier considered the brightest cosmic events.
    • Duration: Remain luminous in radio wavelengths for years, unlike short-lived bursts.

    How ENTs differ from other cosmic events?

    • Gamma-Ray Bursts (GRBs): They come from collapsing stars or mergers; short-lived but highly energetic. ENTs are more powerful and last longer.
    • Tidal Disruption Events (TDEs): TDEs also shred stars, but ENTs involve larger black holes and massive stars, making them rarer.
    • Fast X-ray Transients (FXTs): They are faint, brief X-ray bursts from trapped jets in supernovae. ENTs are brighter, multi-wavelength, and more energetic.

    Scientific Importance of ENTs:

    • Most Energetic Events: Represent the most powerful class of transients ever observed.
    • Black Hole Studies: Offer insights into supermassive black hole dynamics and their role in galactic evolution.
    • Early Universe Clues: Help probe massive stars soon after galaxy formation.
    • Future Observations: Key targets for next-generation telescopes like the Vera C. Rubin Observatory and Nancy Grace Roman Space Telescope.
    [UPSC 2012] Which of the following is/are cited by the scientists as evidence for the continued expansion of the universe?

    1. Detection of microwaves in space

    2. Observation of redshift phenomenon in space

    3. Movement of asteroids in space

    4. Occurrence of supernova explosions in space

    Select the correct answer using the code given below:

    (a) 1 and 2 * (b) 2 only (c) 1, 3 and 4 (d) None of the above.

     

  • How different are Supercomputers to normal computers?

    Why in the News?

    This newscard is an excerpt from the original article published in The Hindu.

    What is a Supercomputer?

    • Overview: A high-performance computing system capable of trillions to quintillions of calculations per second.
    • Parallel Computing: Uses thousands of processors working together instead of relying on a single fast processor.
    • Applications: Climate modelling, nuclear simulations, black hole research, drug discovery, and artificial intelligence training.
    • Performance Measure: FLOPs (floating-point operations per second); advanced machines now achieve exaflop levels (10Âč⁞ calculations/sec).

    How Supercomputers Differ from Normal Computers

    • Speed: Laptops perform billions of FLOPs; supercomputers perform quintillions.
    • Parallelism: PCs use one or few processors; supercomputers employ thousands to millions of cores.
    • Structure: Built of interconnected nodes (processor + memory bundles) linked by ultra-fast networks.
    • Storage: Manage petabytes of data, unlike gigabytes/terabytes in personal devices.
    • Cooling & Power: Need specialised cooling (water/immersion) and consume electricity equal to a small town.
    • Usage: PCs run interactive apps; supercomputers run scheduled jobs remotely for scientists and researchers.

    India’s journey in Supercomputing:

    • Early Efforts: Began with C-DAC’s PARAM 8000 (1991) after Western import restrictions.
    • National Supercomputing Mission (2015): Jointly by DST & Ministry of Electronics and IT; implemented by C-DAC and IISc to build 70+ systems.
    • Major Systems (2025):
      • AIRAWAT-PSAI (C-DAC, Pune) – fastest in India (8.5 PF, global rank 136).
      • PARAM Siddhi-AI – global AI leader.
      • Pratyush (IITM, Pune) – weather & climate (3.76 PF).
      • Mihir (NCMRWF, Noida) – medium-range weather (2.57 PF).
      • PARAM Pravega (IISc, Bengaluru) – academic use (>3.3 PF).
    • Indigenous Push: PARAM Rudra (2024) with Indian servers and software stack.
    • Applications: Monsoon forecasting, Himalayan research, defence simulations, AI, drug design, materials science.
    • Current Capacity: 34+ supercomputers with ~35 petaflops; plans for exascale systems underway.
    [UPSC 2014] Param Padma, which was in the news recently, is:

    (a) a new Civilian Award instituted by the Government of India

    (b) the name of a supercomputer developed by India *

    (c) the name given to a proposed network of canals linking northern and southern rivers of India

    (d) a software programme to facilitate e-governance in Madhya Pradesh

     

  • Is it feasible to blend Isobutanol and Diesel? 

    Why in the News?

    The Union Transport Minister has announced that the Automotive Research Association of India (ARAI) is studying the feasibility of blending Isobutanol with Diesel after ethanol–diesel blending attempts failed.

    About Isobutanol:

    • What is it: A four-carbon alcohol (C₄H₁₀O), clear, flammable, and traditionally used as a solvent in paints, coatings, and chemical industries.
    • Production: Derived either from petrochemical processes or by fermenting sugarcane, molasses, and grains with engineered microbes.
    • Fuel Properties:
      • Higher energy density than ethanol, closer to diesel.
      • Lower hygroscopicity (absorbs less water), reducing rust and corrosion in engines and pipelines.
      • Higher flash point than ethanol, making it safer for storage and transport.

    Isobutanol–Diesel Blending and Benefits:

    • Compatibility: Unlike ethanol, isobutanol blends well with diesel without extra chemicals.
    • Economic Feasibility: Can be produced in existing ethanol plants with minor changes.
    • Agricultural Support: Creates demand for sugarcane by-products, helping farmers and managing sugar surplus.
    • Energy Security: Reduces reliance on imported fossil fuels and saves foreign exchange.
    • Global First: Pilot studies may make India the first country to use isobutanol–diesel blends.

    Challenges and Risks:

    • Combustion Issues: Has a lower cetane number than diesel, causing poor combustion quality.
    • Engine Risks: Can trigger diesel knock (uneven burning, power loss, engine damage).
    • Mixing Limitations: Blending challenges exist but can be partly solved with biodiesel addition.
    • Cost Factor: Requires additives to restore cetane number, increasing costs.
    • Blending Limit: Experts suggest ≀10% blending to avoid harm.
    • Pilot Phase: Testing will take ~18 months before possible large-scale adoption.
    [UPSC 2020] With reference to green hydrogen, consider the following statements:

    1. It can be used directly as a fuel for internal combustion.

    2. It can be blended with natural gas and used as fuel for heat or power generation.

    3. It can be used in the hydrogen fuel cell to run vehicles.

    How many of the above statements are correct?

    Options: (a) Only one (b) Only two (c) All three* (d) None

     

  • Gaganyaan Analog Experiments (Gyanex)

    Why in the News?

    Gyanex (Gaganyaan Analog Experiments) ground-based astronaut simulations are being conducted by ISRO with ICMR and Institute of Aerospace Medicine, Bengaluru, to prepare Indian astronauts for the 2027 Gaganyaan mission.

    What are Gaganyaan Analog Experiments (Gyanex)?

    • Purpose: India’s first systematic programme in space medicine and astronaut psychology, preparing protocols for Gaganyaan and future missions like space stations and lunar expeditions.
    • Setup: Conducted at the Institute of Aerospace Medicine, Bengaluru, with ICMR support. Astronauts and defence personnel live in a mock spacecraft simulator under confinement, consuming DRDO-developed space food.
    • Activities: Strict space-like routines involving scientific experiments, resource management, schedules, and limited supplies. Tests also cover communication with time-delay simulation.
    • Gyanex-1: Group Captain Angad Pratap and two others confined for 10 days; completed 11 experiments on psychology, biomedicine, and communications.
    • Microgravity Simulation: Weightlessness cannot be reproduced on Earth; instead, 7-day bed-confinement at 6° head tilt studied microgravity effects.
    • Other Indian Analog Missions:
      • Ladakh Human Analog Mission (Nov 2024): Simulated interplanetary survival in cold, barren terrain.
      • HOPE Habitat at Tso Kar (Aug 2025): Tested 8 m habitat + 5 m utility module in Mars-like conditions of low pressure, saline permafrost, and high UV radiation.

    About Gaganyaan Mission:

    • Overview: India’s first human spaceflight mission, initiated in 2007, to send 3 astronauts into Low Earth Orbit (400 km) for 3 days, followed by Arabian Sea splashdown.
    • Rocket: Human-Rated LVM3 (HLVM3), adapted from GSLV Mk3, certified in 2025 for safe human use.
    • Significance: India to become the 4th nation (after US, Russia, China) with crewed spaceflight capability.
    • Latest Timeline (as of Sept 2025):
      • Dec 2025: First uncrewed mission (G1) with humanoid Vyommitra.
      • 2026: Two more uncrewed flights for life-support, avionics, and escape tests.
      • Early 2027: First crewed mission – 3 astronauts in orbit for 3 days.
    • Progress so far:
      • 80–85% development complete: avionics, parachutes, crew safety systems validated.
      • Integrated Air Drop Test (Aug 2025): Confirmed crew module deceleration.
      • Crew Escape System: Multiple ground and flight tests successful.
      • Recovery: Indian Navy and Australian Space Agency conducting splashdown drills.
      • Four IAF test pilots shortlisted: Shubhanshu Shukla, Prasanth Balakrishnan Nair, Angad Pratap, Ajit Krishnan.
      • All trained in Russia, now in advanced Indian training. Final crew of three will be chosen for maiden flight.
    [UPSC 2016] Consider the following statements: The Mangalyaan launched by ISRO

    1. is also called the Mars Orbiter Mission

    2. made India the second country to have a spacecraft orbit the Mars after USA

    3. made India the only country to be successful in making its spacecraft orbit the Mars in its first attempt.

    Select the correct answer using the code given below:

    Options: (a) 1 only (b) 2 and 3 only (c) 1 and 3 only * (d) 1, 2 and 3

     

  • How the DeepSeek-R1 AI model was taught to teach itself to reason

    Introduction

    Reasoning, the ability to reflect, verify, self-correct, and adapt, has historically been considered uniquely human. From mathematics to moral decision-making, reasoning shapes every facet of human civilisation. Large language models (LLMs) like GPT-4 have shown glimpses of reasoning, but these were achieved with human-provided examples, introducing cost, bias, and limits. In September 2024, researchers at DeepSeek unveiled their model R1, which demonstrated reasoning through reinforcement learning (trial and error with rewards), without supervised fine-tuning. This represents a paradigm shift in how machines may learn, reason, and potentially evolve intelligence.

    Why is DeepSeek-R1 in the News?

    For the first time, an AI model has taught itself to reason without human-crafted examples. The results were dramatic: DeepSeek-R1 improved from 15.6% to 86.7% accuracy in solving American Invitational Mathematics Examination (AIME) problems, even surpassing the average performance of top human students. It also demonstrated reflection (“wait
 let’s try again”) and verification—human-like traits of reasoning. The scale and quality of progress mark this as a milestone in AI research, contrasting sharply with traditional methods that heavily relied on human-labelled data.

    What is Reinforcement Learning in AI?

    1. Definition: Reinforcement learning (RL) is a trial-and-error method where a system receives rewards for correct answers and penalties for wrong ones.
    2. DeepSeek’s Application: Instead of providing reasoning steps, the model was only rewarded for correct final answers.
    3. Outcome: Over time, R1 developed reflective chains of reasoning, dynamically adjusting “thinking time” based on task complexity.

    How Did DeepSeek-R1 Achieve Self-Reasoning?

    1. R1-Zero Phase: Started with solving maths/coding problems, producing reasoning inside <think> tags and answers in <answer> tags.
    2. Trial-and-Error Learning: Wrong reasoning paths were discouraged, correct ones reinforced.
    3. Emergence of Reflection: Model started using “wait” or “let’s try again,” indicating self-correction.

    What Were the Major Successes?

    1. Mathematical Benchmarks: R1-Zero improved from 15.6% to 77.9%, and with fine-tuning, to 86.7% on AIME.
    2. General Knowledge & Instruction Following: 25% improvement on AlpacaEval 2.0 and 17% on Arena-Hard.
    3. Efficiency: Adaptive thinking chains—shorter for easy tasks, longer for difficult ones—conserving computational resources.
    4. Alignment: Improved readability, language consistency, and safety.

    What Are the Limitations and Risks

    1. High Energy Costs: Reinforcement learning is computationally expensive.
    2. Human Role Not Fully Eliminated: Open-ended tasks (e.g., writing) still require human-labelled data for reward models.
    3. Ethical Concerns: Ability to “reflect” raises risks of generating manipulative or unsafe content.
    4. Need for Stronger Safeguards: As AI reasoning grows, so does the risk of misuse.

    Why Does this Matter for the Future of AI?

    1. Reduces Dependence on Human Labour: Cuts costs and addresses exploitative conditions in data annotation.
    2. Potential for Creativity: If reasoning can emerge from incentives, could creativity and understanding follow?
    3. Shift in AI Training Paradigm: From “learning by example” to “learning by exploration.”
    4. Global Implications: Impacts education, coding, mathematics, governance, and ethics of AI.

    Conclusion

    DeepSeek-R1 marks a turning point in AI evolution. By demonstrating reasoning through reinforcement learning alone, it challenges the notion that human-labelled data is indispensable. Yet, this very capability opens new debates—about creativity, autonomy, and control. For policymakers and citizens alike, the task is to harness AI’s promise while ensuring safety, fairness, and ethical integrity.

    PYQ Relevance:

    [UPSC 2023] Introduce the concept of Artificial Intelligence (AI). How does Al help clinical diagnosis? Do you perceive any threat to privacy of the individual in the use of Al in healthcare?

    Linkage: The breakthrough of DeepSeek-R1 shows how AI can now reason through reinforcement learning without human-labelled data, making it more efficient and adaptive. Such reasoning ability can enhance clinical diagnosis by enabling AI to self-correct and refine decision-making in complex medical cases. However, as with healthcare AI generally, the privacy threat persists if sensitive patient data is fed into models without strong safeguards.

  • Unseen labour, exploitation: the hidden human cost of Artificial Intelligence

    Introduction

    The promise of AI as an automated, error-free technology often masks the unseen human labour that makes it possible. From labelling raw data to moderating harmful content, “ghost workers” form the backbone of AI ecosystems. Yet, their contributions remain invisible, underpaid, and unprotected. The debate on AI is incomplete without recognising the human cost of automation, a matter of global ethics, labour rights, and governance.

    The Hidden Human Cost of AI

    Why is AI’s invisible labour in the news?

    AI companies, especially in Silicon Valley, outsource essential annotation and moderation work to low-paid workers in developing countries. Recent revelations of exploitative conditions, such as Kenyan workers earning less than $2 an hour for traumatic tasks like filtering violent content, have exposed the dark underbelly of AI. This has amplified global concerns about modern-day slavery, violation of labour rights, and the absence of legal safeguards in AI supply chains.

    Areas of Human Involvement in AI

    1. Data Annotation: Machines cannot interpret meaning; humans label text, audio, video, and images to train AI models.
    2. Training LLMs: Models like ChatGPT and Gemini depend on supervised learning and reinforcement learning, requiring annotators to correct errors, jailbreaks, and refine responses.
    3. Subject Expertise Gap: Workers without domain knowledge label complex data, e.g., Kenyan annotators labelling medical scans, leading to inaccurate AI outputs.

    Are Automated Features Truly Automated?

    1. Content Moderation: Social media “filters” rely on humans reviewing sensitive content (pornography, beheadings, bestiality). This causes severe mental health risks like PTSD, anxiety, and depression.
    2. AI-Generated Media: Voice actors, children, and performers record human sounds and actions for training datasets.
    3. Case Study (2024): Kenyan workers wrote to U.S. President Biden describing their labour as “modern-day slavery.”

    What Challenges Do Workers Face?

    1. Poor Wages: Less than $2/hour compared to global standards.
    2. Harsh Conditions: Tight deadlines of a few seconds/minutes per task; strict surveillance; risk of instant termination.
    3. Union Busting: Workers raising concerns are dismissed, with collective bargaining actively suppressed.
    4. Fragmented Supply Chains: Work outsourced via intermediary digital platforms; lack of transparency about the actual employer.

    Why Is This a Global Governance Issue:

    1. Exploitation in Developing Countries: Kenya, India, Pakistan, Philippines, and China host the bulk of annotators, highlighting global North-South labour inequities.
    2. Digital Labour Standards: Current international labour frameworks inadequately cover digital gig work.
    3. Ethical Responsibility: Big Tech profits from AI breakthroughs while invisibilising the labour behind them.
    4. Need for Regulation: Stricter global and national laws must ensure fair pay, transparency, and dignity at work.

    Way Forward

    1. Transparency Mandates: Disclosure of supply chains by tech companies.
    2. Fair Labour Standards: Minimum wages, occupational safety norms, and psychological health safeguards.
    3. Recognition of Workers: From “ghost workers” to “digital labour force.”
    4. Global Collaboration: Similar to climate treaties, AI labour governance requires multilateral regulation.

    Conclusion

    Artificial Intelligence is not fully autonomous—it rests on millions of invisible workers whose exploitation challenges the ethics of the digital age. For India and the world, the future of AI must balance innovation with human dignity, equity, and justice. Without recognising and regulating this labour, the AI revolution risks deepening global inequalities.

    Value Addition

    Global Frameworks and Conventions

    1. ILO Convention 190 (2019): Addresses workplace violence and harassment — highly relevant to content moderators exposed to graphic/traumatic data.
    2. ILO Recommendation 204: Transition from informal to formal economy — ghost workers are currently informal, with no rights.
    3. UN Guiding Principles on Business and Human Rights (2011): Corporate duty to respect human rights across supply chains, including digital gig platforms.
    4. EU Artificial Intelligence Act (2025): First comprehensive law regulating AI systems; includes risk categories and human oversight.
    5. Santa Clara Principles (2018): Framework for transparency, accountability, and due process in online content moderation.

    Conceptual Tools and Keywords

    1. Digital Colonialism: Global North exploits cheap digital labour in Global South for AI systems.
    2. Surveillance Capitalism (Shoshana Zuboff): Big Tech monetises personal data and labour while eroding privacy and dignity.
    3. Platform Precarity: Gig workers face algorithmic control, constant surveillance, and lack of social protection.
    4. Ghost Work (Mary Gray & Siddharth Suri, 2019): Term for invisible human labour powering AI systems.
    5. Cognitive Labour: Work that relies on human judgment, emotional resilience, and meaning-making (beyond physical labour).
    6. Algorithmic Management: Use of algorithms to allocate, monitor, and discipline workers—stripping them of agency.
    7. Ethics of Invisibility: Recognition gap when workers’ contributions are hidden, making justice claims difficult.

    Reports and Studies

    1. Oxford Internet Institute (2019, “Ghost Work”): Estimated millions of hidden workers behind AI, mainly in developing countries.
    2. WEF Future of Jobs Report (2023): Warned of AI-induced job displacements alongside new digital gig work.
    3. ILO Report on Digital Labour Platforms (2021): Documented widespread exploitation, lack of contracts, and cross-border regulatory challenges.

    Indian Context

    1. Code on Social Security, 2020: Recognises gig and platform workers, but still weak on implementation.
    2. NITI Aayog Report on “India’s Booming Gig and Platform Economy” (2022): Predicts 23.5 million gig workers by 2030.
    3. Personal Data Protection Act, 2023: Regulates data, but silent on labour rights of those who process AI data.
    4. India’s AI Mission (National Strategy for AI, NITI Aayog): Envisions “AI for All” but doesn’t sufficiently cover labour dimensions.

    PYQ Relevance

    [UPSC 2023] Introduce the concept of Artificial Intelligence (AI). How does Al help clinical diagnosis? Do you perceive any threat to privacy of the individual in the use of Al in healthcare?

    Linkage: AI aids clinical diagnosis by analysing medical scans and predicting outcomes with high accuracy, but it relies on human annotators to label sensitive data. The article shows how even untrained workers in Kenya were tasked with labelling medical scans, raising concerns of reliability. Such outsourcing also heightens the risk of privacy violations in handling patient data across insecure global supply chains.