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Type: Prelims Only

  • Historical and Archaeological Findings in News

    Dravidian Style of Architecture

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Features of the Dravidian style of temple architecture

    Why in the News?

    • The Archaeological Survey of India (ASI), has recently finished copying inscriptions at three temples in Thirukurungudi, located in Tirunelveli district.

    About the 3 temples mentioned:

    Nambi Rayar Temple (Thirukoshtiyur Temple)

    • It is a temple dedicated to Lord Vishnu and is located in Thirukoshtiyur, near Sivaganga in Tamil Nadu.
    • It is one of the 108 Divya Desams (sacred Vishnu temples).
    • It is known for its association with Ramanuja, one of the most important figures in Vaishnavism, who learned the sacred mantra “Ashtakshara” here.
    • The temple has a five-tiered rajagopuram (temple tower) and is built in Dravidian style.

    Thirumalai Nambi Temple (Thirumaliruncholai Temple)

    • It is a temple dedicated to Lord Vishnu and is located in Thirumaliruncholai, also known as Azhagar Kovil, near Madurai, Tamil Nadu.
    • This temple is also one of the 108 Divya Desams.
    • Thirumalai Nambi, who was a saint and a scholar, was closely associated with this temple and served as a priest here.
    • The temple is set in a hilly region and has intricate carvings and sculptures in traditional Dravidian architecture.

    Aniliswarar Temple

    • It is a Shaivite temple located in Anilivandhan Kottai, near Kanchipuram, Tamil Nadu.
    • The temple architecture is traditional with a smaller gopuram (temple tower) compared to the larger, more well-known temples.

    dravid

    About Dravidian Style of Architecture

    Details
    Flourished 8th century to the 13-14th century AD
    Enclosure Temples are enclosed within a compound wall, unlike Nagara temples.
    Notable Features
    • Gopuram (Entrance Gateway): The front wall has an elaborate gateway tower called Gopuram, which serves as the main entrance to the temple complex.
    • Vimana (Main Tower): Vimana or temple tower has a stepped pyramid-like structure that rises geometrically, unlike the curving shikhara in North Indian temples.
    • Temple Tank: It is common to have a large water reservoir or temple tank enclosed within the temple complex.
    Shapes of Temples
    • Square (Kuta or Caturasra)
    • Rectangular (Shala or Ayatasra)
    • Elliptical (Gaja-prishta or Vrittayata)
    • Circular (Vritta)
    • Octagonal (Ashtasra)
    Notable Temples The Pallavas, early builders of Dravidian temples, started with rock-cut temples and later shifted to structural temples.

    • Mahabalipuram: Narasimhavarman I (Mamalla) initiated construction, and Narasimhavarman II (Rajasimha) built the Shore Temple.
    • The Shore Temple houses three shrines for Shiva and Vishnu.

    The Rajarajeswara or Brahadeeshwarar Temple at Thanjavur, built by Rajaraja Chola in 1009 CE, is the largest and tallest of Indian temples. It features large Gopurams with elaborate sculptures.

    Significance Temples were not only religious centers but also key administrative hubs, controlling large areas of land and resources, especially during the 8th-12th centuries.

     

    PYQ:

    [2012] The Nagara, the Dravida and the Vesara are the:

    (a) Three main racial groups of the Indian subcontinent

    (b) Three main linguistic divisions into which the languages of India can be classified

    (c) Three main styles of Indian temple architecture

    (d) Three main musical Gharanas prevalent in India

  • Health Sector – UHC, National Health Policy, Family Planning, Health Insurance, etc.

    [pib] World Cerebral Palsy Day

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Cerebral palsy

    Why in the News?

    • The World Cerebral Palsy Day was celebrated on October 6 with the theme ‘#UniquelyCP’.
      • It celebrates the uniqueness of individuals living with cerebral palsy by emphasizing that they are not defined by their disability.

    About Cerebral Palsy:

    Details
    Condition A group of neurological disorders affecting movement, muscle tone, and posture.
    Cause Abnormal brain development, usually before birth; can also occur due to injury during birth or early childhood.
    Types Spastic CP: Stiff muscles, difficulty with movement (most common, 70-80% of cases).
    Dyskinetic CP: Uncontrolled movements affecting limbs.
    Ataxic CP: Poor balance and coordination.
    Mixed CP: Combination of symptoms from different types.
    Symptoms Motor skill difficulties (crawling, walking); Muscle stiffness or looseness; Poor coordination and balance; Speech or swallowing difficulties; Seizures in some cases.
    Diagnosis Physical examination, MRI scans, developmental monitoring (usually diagnosed within first 2 years).
    Risk Factors Premature birth; Low birth weight; Multiple births; Maternal infections; Lack of oxygen during birth.
    Treatment – Physical, occupational, and speech therapies.
    – Medications to reduce muscle stiffness.
    – Surgery in severe cases.
    Life Expectancy Normal life expectancy in many cases, depending on severity and associated complications.
    Prevention Some causes are preventable with proper maternal care, but many are not.
    Policy Support Niramaya Health Insurance Scheme:

    • Coverage: Up to ₹1,00,000/- for treatments, surgeries, and therapies for persons with disabilities.
    • Eligibility: Covers individuals with Autism, Cerebral Palsy, Mental Retardation, and Multiple Disabilities.
    • Annual Renewal: Requires yearly renewal with different fees for BPL and APL categories.
    • Easy Application: Enrollment and claims processed online via Registered Organizations (ROs).

     

    PYQ:

    [2020] In order to enhance the prospects of social development, sound and adequate health care policies are needed particularly in the fields of geriatric and maternal health care. Discuss.

  • Renewable Energy – Wind, Tidal, Geothermal, etc.

    [pib] International Energy Efficiency Hub

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: International Energy Efficiency Hub

    Why in the News?

    The Union Cabinet has approved the signing of a ‘Letter of Intent’ that will enable India to join the International Energy Efficiency Hub (Hub).

    About the International Energy Efficiency Hub

    • The Hub was established in 2020 as the successor to the International Partnership for Energy Efficiency Cooperation (IPEEC), of which India was already a member.
    • It is a global platform that promotes collaboration and energy efficiency among governments, international organizations, and the private sector.
    • Members: As of July 2024, 16 countries (Argentina, Australia, Brazil, Canada, China, Denmark, the European Commission, France, Germany, Japan, Korea, Luxembourg, Russia, Saudi Arabia, the US, and the UK.)
    • The Bureau of Energy Efficiency (BEE), a statutory agency, has been designated as the implementing agency for India’s participation in the Hub.

    Significance for India

    • India will benefit from opportunities to collaborate with other member states as a member.
    • India can share its expertise and learn from international best practices in energy efficiency.
    • The country will also contribute to global efforts to address climate change by promoting energy-efficient technologies and practices.
    • India’s participation will:
      • Accelerate the transition to a low-carbon economy.
      • Improve energy security by adopting more efficient energy practices.

    Back2Basics: Bureau of Energy Efficiency (BEE) 

    Details
    Establishment Established in March 2002 under the Energy Conservation Act, 2001
    Objective To promote energy efficiency and conservation, reduce energy intensity, and enhance energy security
    Governing Body Functions under the Ministry of Power, Government of India
    Key Functions • Develops energy efficiency policies and strategies
    • Implements energy conservation programs
    • Coordinates with various sectors like industry, transport, and municipalities on energy efficiency
    • Promotes R&D in energy conservation technologies
    Key Initiatives Standards and Labeling Program (Star rating system for appliances)
    Perform, Achieve, and Trade (PAT) Scheme (for energy-intensive industries)
    Energy Conservation Building Code (ECBC) (for commercial buildings)
    National Mission for Enhanced Energy Efficiency (NMEEE)
    Energy Efficiency Financing Platform (EEFP)
    Important Programs National Energy Conservation Awards
    Demand Side Management (DSM)
    Street Lighting National Program (SLNP) (LED streetlight replacement)
    Goals • Reduce energy intensity in India
    • Improve energy efficiency in key sectors like agriculture, industry, buildings, and appliances
    • Contribute to sustainable development and reduce greenhouse gas emissions
    International Cooperation Collaborates with UNDP, World Bank, and ADB on energy efficiency projects globally
    Legislative Framework Operates under the Energy Conservation Act, 2001
    Achievements • Significant reduction in carbon emissions
    • Supports India’s climate commitments under the Paris Agreement

     

    PYQ:

    [2016] On which of the following, can you find the Bureau of Energy Efficiency Star Label?

    1. Ceiling fans

    2. Electric geysers

    3. Tubular fluorescent lamps

    Select the correct answer using the codes given below:

    (a) 1 and 2 only

    (b) 3 only

    (c) 2 and 3 only

    (d) 1, 2 and 3

  • Innovations in Biotechnology and Medical Sciences

    Why you should care about Mapping of the Fruit Fly’s Brain?

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Brain mapping of fruit flies and its applications

    Why in the News?

    Researcher have successfully mapped the entire brain of an adult fruit fly, marking the first time researchers have created such a detailed map of an adult animal’s brain.

    How Was the Fruit Fly Brain Mapped?

    • The process of mapping Fruit Flies (Drosophila melanogaster) brain began in 2013.
    • Scientists dunked the brain of an adult fruit fly in a chemical bath, hardening it into a solid block.
    • This process involved 7,050 sections of the brain and produced 21 million photos to map the entire brain.
    • The first high-resolution image of the brain was created more than a decade after the work started.

    Key findings

    • Scientists identified more than 50 million connections between 139,000 neurons (brain nerve cells).
    • They classified the cells into 8,453 distinct types, making it the largest catalogue of cell types in any brain.
    • The research gave insights into how different types of cells function and how the fruit fly’s eyes process motion and color.
    • A group of “hub neurons” was discovered, which may help speed up information flow.

    Significance of the Work

    • Although the human brain is more complex, the logic of how neurons communicate is similar between fruit flies and humans.
    • Fruit flies are a valuable model system for neuroscience. Their brains solve many of the same problems that human brains do.
    • It could help in understanding and treat mental health conditions like Parkinson’s and depression.
    • The mapping of the fruit fly’s brain raises hopes that scientists will eventually be able to map the entire human brain.
  • Tribes in News

    Tribes in news: Chenchu Tribe

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Chenchu Tribes and its unique culture

    Why in the News?

    • The Chenchu tribe, a particularly vulnerable tribal group (PVTG) in Andhra Pradesh, faces poverty, unemployment, and worsening living conditions due to the discontinuation of a special MGNREGS project.
      • The government launched the MGNREGS Chenchu Special Project in 2009 to address their specific needs, providing 180 days of employment.

    About Chenchu Tribe

    Details
    Location Primarily found in Andhra Pradesh, Telangana, Karnataka, and Odisha
    Habitat Sparse and deciduous Nallamala forest, part of the Eastern Ghats
    Language Chenchu language, belonging to the Dravidian language family
    Traditional Livelihood Hunter-gatherers, relying on forest produce like honey, roots, tubers, soapberries, and gum for sustenance
    Role in Tiger Conservation Involved as tiger protection watchers in the Nagarjuna-Srisailam Tiger Reserve (NSTR)
    Forest Rights Granted land rights under the Forest Rights Act (2006), allowing subsistence farming and forest dwelling
    Challenges Facing displacement, low literacy rate (40.6%), and rehabilitation issues due to relocation from their forest homes
    Cultural Practices Worship Malalamma Vana Devatha (goddess of honey); brew liquor from acacia bark, mahua flower, and jaggery
    Society Community-oriented with close-knit family bonds, practicing traditional subsistence living and deeply connected to forest ecosystems
    Population 64,227 (2011 Census), spread across five districts in Andhra Pradesh and Telangana
    Government Support Special rights granted under the Scheduled Tribes and Other Traditional Forest Dwellers (FRA)
    Major Threats Displacement due to tiger conservation efforts, lack of modern skills, poverty, and low literacy rates

     

    PYQ:

    [2013] Consider the following pairs :

    Tribe: State

    1. Limboo Limbu : Sikkim

    2. Karbi : Himachal

    3. Dongaria Kondh : Odisha

    4. Bonda : Tamil Nadu

    Which of the above pairs are correctly matched?

    (a) 1 and 3 only

    (b) 2 and 4 only

    (c) 1, 3 and 4 only

    (d) 1, 2, 3 and 4

  • Languages and Eighth Schedule

    [pib] Cabinet confers Classical Language Status to Marathi, Pali, Prakrit, Assamese and Bengali languages

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Classical Languages

    Why in the News?

    The Union Cabinet has approved conferring the status of Classical Language to Marathi, Pali, Prakrit, Assamese, and Bengali.

    Classical Languages in India:

    Details
    Objective To recognize and preserve Bharat’s profound cultural heritage embodied in these languages and their literary traditions.
    Criteria for Classical Language Status 2004 (when Tamil was declared a Classical Language):

    1. High Antiquity over a thousand years.
    2. A body of ancient literature valued by generations.
    3. Original literary tradition, not borrowed.

    2005 (when Sanskrit was declared a Classical Language):

    1. High Antiquity over 1500-2000 years.
    2. Ancient literature valued by generations.
    3. Original literary tradition, not borrowed.
    4. Distinct from modern forms, with possible discontinuity.

    2024 (as recommended by the Linguistic Experts Committee):

    1. High Antiquity over 1500-2000 years.
    2. Ancient literature valued by generations.
    3. Includes knowledge texts, prose, inscriptions.
    4. Distinct from current forms or may show discontinuity.
    Previously Conferred Status Tamil (2004), Sanskrit (2005), Telugu (2008), Kannada (2008), Malayalam (2013), Odia (2014)
    Implementation Strategy • Establishment of Central Universities for Sanskrit (2020)
    • Promotion of Tamil, Kannada, Telugu, Malayalam, and Odia through the Central Institute of Indian Languages (Mysuru)
    • National and International awards for Classical Languages
    Impact on Employment • Employment in academia, research, and archiving
    • Jobs in preservation, digitization, translation, and publishing of ancient texts
    States Involved Maharashtra (Marathi), Bihar, Uttar Pradesh, Madhya Pradesh (Pali, Prakrit), West Bengal (Bengali), Assam (Assamese)
    The Eighth Schedule
    • Lists 22 official languages, governed by Articles 344(1) and 351 of the Constitution.
    • Includes Assamese, Bengali, Bodo, Dogri, Gujarati, Hindi, Kannada, Kashmiri, Konkani, Maithili, Malayalam, Manipuri, Marathi, Nepali, Odia, Punjabi, Sanskrit, Santali, Sindhi, Tamil, Telugu, and Urdu
    Chronological Additions to the Eighth Schedule 1950: Initially included 14 languages
    1967: Sindhi added (21st Constitutional Amendment)
    1992: Konkani, Manipuri (Meitei), Nepali added (71st Constitutional Amendment)
    2003: Bodo, Dogri, Maithili, Santali added (92nd Constitutional Amendment)
    2011: “Oriya” replaced with “Odia” (96th Constitutional Amendment)

     

    PYQ:

    [2015] Which one of the following was given classical language status recently?

    (a) Odia

    (b) Konkani

    (c) Bhojpuri

    (d) Assamese

    [2014] Consider the following languages :

    1. Gujarati

    2. Kannada

    3. Telugu

    Which of the above has/have been declared as ‘Classical Language / Languages’ by the Government?

    (a) 1 and 2 only

    (b) 3 only

    (c) 2 and 3 only

    (d) 1, 2 and 3

  • Indian Navy Updates

    Second edition of Navika Sagar Parikrama

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Navika Sagar Parikrama

    Why in the News?

    The second edition of Navika Sagar Parikrama, a global circumnavigation by sailboat was flagged off by Navy Chief at INS Mandovi in Goa.

    About Navika Sagar Parikrama:

    Details
    Expedition
    • Navika Sagar Parikrama, a maritime expedition by the Indian Navy, aimed at circumnavigating the globe in a sailboat crewed by women officers.
    • Symbolizes women’s empowerment and Indian maritime traditions.
    Objective Promotes women’s empowerment, gender equality, oceanic research, and Indian maritime traditions.
    First Edition
    • Began on September 10, 2017, with an all-women crew of six officers aboard INSV Tarini.
    • Completed on May 21, 2018.
    Second Edition Launched on October 2, 2024, with two women officers, Lieutenant Commander Dilna K. and Lieutenant Commander Roopa A., setting sail from INS Mandovi, Goa.
    Agencies Involved
    • Indian Navy: Leading the initiative.
    • National Institute of Oceanography (NIO): Marine research on microplastics and ferrous content.
    • Wildlife Institute of India (WII): Research on large sea mammals.
    • Sagar Defence: Providing drones for documentation.
    • Defence Food Research Laboratory (DFRL): Supplying meals.
    • Transform Rural India Foundation (TRIF) and Piramal Foundation: Supporting logistics and research.
    Route Divided into five legs with four stopovers:
    1. Goa to Fremantle, Australia
    2. Fremantle to Lyttleton, New Zealand
    3. Lyttleton to Port Stanley, Falkland Islands
    4. Port Stanley to Cape Town, South Africa
    5. Cape Town to Goa, India

     

    PYQ:

    [2016] Which one of the following is the best description of ‘INS Astradharini’, that was in the news recently?

    (a) Amphibious warfare ship

    (b) Nuclear-powered submarine

    (c) Torpedo launch and recovery vessel

    (d) Nuclear-powered aircraft carrier

  • Pharma Sector – Drug Pricing, NPPA, FDC, Generics, etc.

    What are Psychedelic Drugs?

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Psychedelic Drugs

    Why in the News?

    Researchers from the Tata Institute of Fundamental Research (TIFR) in collaboration with researchers from Cornell, Yale, and Columbia has uncovered how a psychedelic drug interacts with the brain to alleviate anxiety.

    About Psychedelic Drugs

    • Psychedelic drugs are a class of psychoactive substances that alter perception, mood, and cognitive processes. 
    • These drugs often induce hallucinations, altered states of consciousness, and enhanced sensory experiences.
    • They are typically associated with spiritual experiences and have historically been linked with counterculture movements, but they are now being studied for their potential in medical therapies.
    • Examples of Psychedelic Drugs:
      • LSD (Lysergic acid diethylamide): Known for causing intense visual hallucinations and altering thoughts, it is one of the most potent psychedelics.
      • Psilocybin: The active compound found in magic mushrooms, known for creating visual and auditory hallucinations, as well as a deep sense of connection to the environment.
      • MDMA (3,4-methylenedioxymethamphetamine): Often associated with recreational use, but is also being researched for its therapeutic potential, especially in treating PTSD.
      • DMT (Dimethyltryptamine): Produces powerful, short-lived hallucinatory experiences, sometimes referred to as the “spirit molecule.”
      • Mescaline: Found in the peyote cactus, mescaline induces hallucinations and altered states of reality.

    How do they work?

    Psychedelics primarily affect the brain by interacting with the serotonin system, a network of neurotransmitters involved in regulating mood, perception, and cognition.

    • Serotonin Receptors: Psychedelics like LSD and psilocybin bind to 5-HT2A receptors, a type of serotonin receptor. This interaction leads to altered perception, enhanced mood, and hallucinations.
    • Brain Connectivity: They increase communication between different regions of the brain, breaking down normal patterns of activity. This leads to heightened creativity, altered sensory experiences, and a sense of connectedness.

    How Psychedelics hold promise for treating Anxiety and Depression?

    • Resetting Neural Circuits: Psychedelics may “reset” dysfunctional brain circuits, helping treat mood disorders.
    • Reduced Anxiety: They reduce overthinking by dampening activity in the brain’s default mode network.
    • Emotional Release: Patients experience emotional breakthroughs during psychedelic therapy sessions.
    • Neuroplasticity: Psychedelics may promote adaptive brain connections, aiding in recovery from chronic stress and depression.
    PYQ:

    [2018] India’s proximity to two of the world’s biggest illicit opium-growing states has enhanced her internal security concerns. Explain the linkages between drug trafficking and other illicit activities such as gunrunning, money laundering and human trafficking. What countermeasures should be taken to prevent the same? (250 Words, 15 Marks)

  • Wildlife Conservation Efforts

    Species in News: Golden Langur

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Golden Langur

    Golden Langur

    Why in the News?

    The construction of wildlife passages and artificial canopy bridges along the India-Bhutan border has been prompted by increased deaths of the endangered golden langur due to road accidents.

    About Golden Langur

    Details
    Identification
    • Recognizable by the color of their fur, which gives them their name.
    • Fur color changes with the seasons.
    • Young langurs are almost pure white.
    Geographic Range
    • Found in Assam, India, and neighboring Bhutan year-round.
    • Inhabits an area bordered by the foothills of Bhutan (north), Manas river (east), Sankosh river (west), and Brahmaputra river (south).
    Habitat
    • Occupies moist evergreen and tropical deciduous forests, along with some riverine areas and savannahs in Assam and Bhutan.
    • Prefers living in the upper canopy of sub-tropical forests in the south and temperate forests in the north.
    Conservation Status
    • IUCN: Endangered
    • CITES: Appendix I
    • Wildlife Protection Act, 1972: Schedule I
    Habitat
    • Ripu Reserve Forest and Chakrashila WLS serve as vital habitats.
    • Fragmented habitats face instability and threats.

     

    PYQ:

    [2012] Which one of the following groups of animals belongs to the category of endangered species?

    (a) Great Indian Bustard, Musk Deer, Red Panda and Asiatic Wild Ass

    (b) Kashmir Stag, Cheetal, Blue Bull and Great Indian Bustard

    (c) Snow Leopard, Swamp Deer, Rhesus Monkey and Saras (Crane)

    (d) Lion-tailed Macaque, Blue Bull, Hanuman Langur and Cheetal

  • Innovations in Sciences, IT, Computers, Robotics and Nanotechnology

    Fluorescent Nano-Diamonds (FND)

    Note4Students

    From UPSC perspective, the following things are important:

    Prelims level: Fluorescent Nano-Diamonds (FND)

    Why in the News?

    Scientists at Purdue University have figured out how to levitate and spin Fluorescent Nanodiamonds (FNDs) in a vacuum.

    What are FNDs?

    • Fluorescent Nanodiamonds (FNDs) are stable, non-toxic carbon nanoparticles that emit consistent fluorescence, have a lifespan over 10 nanoseconds, and can be levitated and spun for advanced quantum research applications.

    What are their Applications?

    • Medical Diagnostics: FNDs are used for high-resolution imaging and tracking cells over extended periods due to their non-toxic nature.
    • Temperature Sensing: FNDs can measure temperatures at the microscale, making them useful for scientific experiments.
    • Correlative Microscopy: Their fluorescent properties make them ideal for combining different types of imaging techniques.
    • Sensor Technologies: Due to their sensitivity to acceleration and electric fields, FNDs can be used in industry sensors and gyroscopes for rotation sensing.
    • Quantum Computing: FNDs doped with nitrogen can be used for quantum superposition experiments and future quantum computing applications.

    PYQ:

    [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