UPSC CURRENT AFFAIRS – 23 July 2025

 

UPSC CURRENT AFFAIRS – 23 July 2025 covers important current affairs of the day, their backward linkages, their relevance for Prelims exam and MCQs on main articles

 

InstaLinks :  Insta Links help you think beyond the  current affairs issue and help you think multidimensionally to develop depth in your understanding of these issues. These linkages provided in this ‘hint’ format help you frame possible questions in your mind that might arise(or an examiner might imagine) from each current event. InstaLinks also connect every issue to their static or theoretical background.

Table of Contents 

GS Paper 1 : (UPSC CURRENT AFFAIRS – 23 July (2025)

1. Constitutional Dreams Before 1950

GS Paper 3:

2. Redeeming India’s Nuclear Power Promise

 Content for Mains Enrichment (CME):

1. The Dying Reefs of Vanuatu and the Fight for Climate Justice

2. Manual Scavenging and Trends

Facts for Prelims (FFP):

1. A Fungus Fighting Pineapple

2. Ashokan Pillar

3. Legacy of Radio Broadcasting in India

4. Vice-President of India – Re-election Process

5. MiG-21

6. The United States has announced its decision to withdraw from UNESCO

 Mapping:

1. Karenia mikimotoi-induced toxic algal bloom

UPSC CURRENT AFFAIRS – 23 July 2025

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GS Paper 1:

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Constitutional Dreams Before 1950

Syllabus: Evolution of Constitution

Source:  TH

Context: Scholars are revisiting pre-1950 constitutional drafts like the 1895 Constitution Bill and M.N. Roy’s 1944 draft, which offered alternative visions of democracy, sovereignty, and governance.

• These documents reflect India’s rich constitutional imagination before the republic was born.

About Constitutional Dreams Before 1950:

Five Key Drafts and Their Ideological Anchors:

1. The 1895 Constitution of India Bill – Liberal Dominion Vision

1. • Drafted by early nationalists like Bal Gangadhar Tilak (attributed).
   • Proposed 110 articles, emphasizing individual rights, civil liberties, and legal equality.
   • Inspired by British constitutionalism; sought representative government within the Empire, not full independence.
   • Favoured separation of powers and rule of law, focusing on elite-led legal reform.

2. N. Roy’s 1944 Draft – Radical Democracy and Participatory Governance

1. • Framed under the Radical Democratic Party, based on radical humanism.
   • Introduced popular sovereignty, a robust Bill of Rights, and the right to revolt against tyranny.
   • Advocated linguistic federalism, decentralisation via citizens’ committees, and direct participation.
   • Balanced civil and socio-economic rights, making them justiciable and legally binding.

3. Hindusthan Free State Act, 1944 – Cultural Nationalism with Secular Protections

1. • Linked to Hindu Mahasabha, envisioned a unitary structure named “Hindusthan Free State.”
   • Stressed national unity via one language, one law, one culture, yet guaranteed religious freedom and equality.
   • Declared no state religion, and prohibited use of public funds for religious ends.
   • Included right to secession for provinces and strong emergency powers for the state.
   • Balanced nationalist ethos with formal constitutional secularism.

4. Gandhian Constitution (1946) – Ethical Decentralism and Village Swaraj

1. • Authored by Shriman Narayan Agarwal with a foreword by Mahatma Gandhi.
   • Proposed confederation of self-reliant village republics based on khadi, trusteeship, and non-violence.
   • Rejected industrial capitalism and legal bureaucracy, favouring moral self-governance.
   • Ironically included the right to bear arms, revealing tension between pacifism and practical self-defence.
   • Focused on duties and spiritual values over formal legal rights.

5. Socialist Party Draft (1948) – Marxist Economic Restructuring and Class Representation

1. • Proposed by the Socialist Party under Jayaprakash Narayan.
   • Advocated nationalisation of industry, land reform, and worker-peasant control of production.
   • Suggested unicameral legislature with class-based representation.
   • Emphasized economic democracy over procedural safeguards; less detailed on judicial/administrative mechanisms.
   • Envisioned a planned economy, gender equality, and eradication of caste discrimination.

Comparative Analysis of Ideological Threads in Pre-1950 Constitutional Drafts:

India’s constitutional evolution before 1950 was shaped by diverse ideological currents. Each draft reflected a unique vision of sovereignty, governance, economic justice, and civil liberties. A comparative analysis is presented below:

Locus of Sovereignty:

• 1895 Bill & Socialist Party Draft: Both placed ultimate authority in the legislature, indicating a belief in representative governance through elected bodies.
• M.N. Roy’s Draft: Shifted the locus of power to the people, not parliament. It introduced the right to revolt and citizens’ committees, envisioning direct democracy and participatory accountability.
• Gandhian Model: Rooted sovereignty in moral authority and community ethics, focusing on self-regulated village republics where legitimacy came from tradition and non-violence, not formal state institutions.

Governance Style:

• Centralised Models:
  • Hindusthan Free State Act: Advocated unitary governance, with one law, one language, and a culturally unified state.
  • Socialist Party Draft: Favoured central planning and authority, essential for executing land reforms and nationalisation.
• Decentralised Models:
  • M.N. Roy: Proposed a federal India, linguistically reorganised with checks against bureaucratic centralism and direct democratic controls.
  • Gandhian Draft: Envisioned a confederation of village republics (Gram Swaraj) as the fundamental governing units, functioning independently but morally aligned.

Economic Vision:

• Gandhian Draft: Favoured a minimalist, agrarian economy based on khadi, self-sufficiency, and non-industrial livelihoods, rooted in ethical trusteeship.
• M.N. Roy: Advocated democratic socialism, supporting public control over key industries and enforceable socio-economic rights within a participatory framework.
• Socialist Party Draft: Took a radical Marxist stance, calling for the nationalisation of land and industries, worker control, and class-based representation.
• 1895 & Hindusthan Free State: Largely silent on economic redistribution, reflecting either a legal-liberal concern (1895) or nationalist-cultural focus (Hindusthan Free State) without structural economic blueprints.

Civil Liberties and Rights Framework:

• Strong Civil Liberties Framework:
  • 1895 Bill: Inspired by Western liberalism, included freedom of speech, property, and legal equality.
  • M.N. Roy: Advanced the rights discourse by including both civil and socio-economic rights, making them justiciable and binding.
• Economic Rights First:
  • Socialist Draft: Prioritised economic democracy and material equity over procedural civil rights; liberty was seen through the lens of class justice.
• Ethical Duties over Legal Rights:
  • Gandhian Draft: Emphasised community duties, moral conduct, and village ethics over individualistic rights, aiming for a spiritually cohesive society.
• Balanced Approach within Nationalism:
  • Hindusthan Free State: Despite its culturally majoritarian tone, it guaranteed freedom of religion, conscience, and non-discrimination, showing formal commitment to secularism within a unified national framework.

 

Legacy in the 1950 Constitution

Conclusion:

These early drafts represented India’s ideological diversity long before the Constitution was adopted. Whether it was Roy’s participatory democracy, Gandhi’s moral localism, or the Socialists’ radical redistribution — each offered unique insights. Though the 1950 Constitution was a consensus document, it was enriched by the intellectual ferment that preceded it.

 

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UPSC CURRENT AFFAIRS – 23 July 2025 GS Paper 3:

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Redeeming India’s Nuclear Power Promise

Syllabus: Energy

Source:  TH

Context: The Union Budget 2025–26 set a bold target of achieving 100 GW nuclear power capacity by 2047. This comes alongside a ₹20,000 crore allocation for developing Small Modular Reactors (SMRs), highlighting nuclear energy as a key pillar for a developed and net-zero India.

About Redeeming India’s Nuclear Power Promise:

India’s Nuclear Power: From Apsara to 2047:

• Early Start and Isolation: India launched Asia’s first nuclear reactor (Apsara, 1956) and power plant (Tarapur, 1963), but post-1974 nuclear test and non-signature of NPT led to isolation and export bans.
• Self-Reliance in PHWRs: Indigenous development of 220 MW Pressurised Heavy Water Reactors (PHWRs) helped bypass dependency on enriched uranium.
• NSG Waiver & International Entry: Post-2008 Indo-U.S. civil nuclear deal and NSG waiver allowed India to import nuclear fuel and negotiate foreign reactor deals.

Why Nuclear Power Is Critical to India’s Growth?

1. Stable Base-load Supply: Unlike solar or wind, nuclear provides uninterrupted, 24×7 power crucial for industrialisation and urban expansion.
2. Low Carbon Emissions: Nuclear emits negligible greenhouse gases, helping India meet its COP26 pledge of net-zero by 2070.
3. Energy Security: Reduces dependency on fossil fuel imports, especially coal and oil, enhancing strategic autonomy.
4. High Energy Density: A small volume of nuclear fuel generates large energy output, making it land- and resource-efficient.
5. Scalability for Viksit Bharat: Essential for achieving the 100 GW target by 2047, supporting India’s $35 trillion economy goal.

Challenges Hindering Nuclear Expansion:

1. Restrictive Legal Architecture:
   • Atomic Energy Act, 1962 restricts nuclear operations to government entities.
   • CLNDA, 2010’s supplier liability clause deters foreign/private participation.
2. Regulatory Gaps: Atomic Energy Regulatory Board (AERB) lacks legal independence and previous reform Bill lapsed in 2011.
3. Financing Hurdles:
   • Capital cost of $2 million/MW for PHWRs vs. <$1 million/MW for coal.
   • Lack of green financing eligibility; limited PPP/JV frameworks.
4. Tariff and Jurisdictional Conflicts: NPCIL tariffs are notified under the Atomic Energy Act and legal disputes with DISCOMs show need for clearer regulatory authority.
5. Slow Negotiations with Foreign Partners: U.S. and France reactor projects have seen negligible progress over 15 years.

Way Forward:

1. Amend Atomic Energy and CLNDA Acts:

1. • Enable private and foreign JV participation.
   • Clearly define operator-supplier liability and ownership roles.

2. Independent Nuclear Regulator:

1. • Revive and pass the Nuclear Safety Regulatory Authority Bill.
   • Ensure transparency and accountability in project licensing and safety.

3. Green Financing and Incentives:

1. • Classify nuclear as low-carbon energy under “green” taxonomy.
   • Provide tax benefits, viability gap funding, and long-term PPAs.

4. Small Modular Reactor (SMR) Deployment:

1. • Standardize 220 MW PHWR design for modular application.
   • Target industrial captive markets replacing 100 GW thermal base.

5. Revive Foreign Partnerships and Fast-Track JVs:

1. • Accelerate talks with France (EPRs) and the U.S. (Westinghouse AP1000s).
   • Encourage strategic PSUs and large Indian corporates to join JVs (e.g., NTPC, Adani, Tata, Vedanta).

Conclusion:

India’s civil nuclear journey must now transition from cautious evolution to bold reform. With strategic, legislative, and financial restructuring, nuclear energy can be India’s backbone for green, secure, and inclusive growth. Achieving 100 GW by 2047 is not just an energy target — it’s a cornerstone of India’s aspiration for development and climate leadership.

 

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UPSC CURRENT AFFAIRS – 23 July 2025 Content for Mains Enrichment (CME)

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The Dying Reefs of Vanuatu and the Fight for Climate Justice

Anecdote: John Warmington, a veteran diver from Vanuatu’s Havannah Harbour, once swam through vibrant coral forests teeming with life. Today, that reef lies in ruin—a graveyard of bleached staghorn and broken plate corals, devastated by cyclones, starfish infestations, and a recent 7.3 magnitude earthquake. On land, climate change has disrupted every layer of life: schoolchildren study under tents dismantled for each storm, and farmers like Kaltang Laban struggle to regrow cassava and taro in ruined soils. With over 70% of the population relying on subsistence farming, Vanuatu’s survival is at stake. Refusing to be a silent victim, the island nation has led over 130 countries to the International Court of Justice, demanding legal accountability from major polluters. Though the verdict is non-binding, it could reshape international climate law. For Vanuatu, this case is not politics—it is a plea for justice, for dignity, and for the right to exist.

Relevance in UPSC Exam Syllabus:

Essay:

• Moral Leadership from the Margins: Vanuatu embodies ethical leadership, proving that moral voice isn’t tied to geopolitical size.
• Crisis as Catalyst: Repeated disasters forged resilience and legal innovation—“adversity reveals character.”
• Voice of Justice: Ideal to support essays on environmental justice, ethical responsibility, and power asymmetry.

Ethics (GS-IV) Relevance

• Moral Burden of the Powerful: Echoes Rawlsian justice—those with capacity must shoulder responsibility.
• Intergenerational Duty: Tents and hunger underscore Kantian duty to future generations.
• Ecocide as Ethical Imperative: Push to criminalize environmental destruction aligns ethics with law.

GS Paper 3 Relevance: Environment & Climate Governance

• Legal Climate Precedent: ICJ case could embed climate duties into global legal norms.
• Climate Migration Tools: Tuvalu and Nauru’s adaptive responses reflect loss and resilience.

 

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Manual Scavenging and Trends

Context: A recent social audit by the Ministry of Social Justice revealed that over 90% of workers who died cleaning sewers in 2022–23 lacked any safety gear, raising serious concerns about implementation of safety norms despite the ban on manual scavenging.

About Manual Scavenging and Trends:

• Manual scavenging refers to the manual cleaning, carrying, or handling of human excreta from dry latrines, sewers, or septic tanks, a practice officially banned under the Prohibition of Employment as Manual Scavengers and their Rehabilitation Act, 2013.
• Disturbing Trends:
  • 150 deaths due to hazardous sewer cleaning recorded in 2022–23.
  • In 49 of 54 audited deaths, no safety equipment was provided.
  • Consent or counselling before hazardous cleaning was missing in over half the cases.
  • Majority of workers were contracted informally, evading legal safeguards.
• NAMASTE Scheme (2023): A government initiative to address hazardous sewer cleaning and promote mechanisation. Over 84,000 workers identified, but only 50% have PPE access so far.

Relevance in UPSC Syllabus:

• GS Paper II (Governance, Social Justice):
  • Welfare Schemes for vulnerable sections (NAMASTE).
  • Issues related to SC/ST and minorities—manual scavenging disproportionately affects Dalit communities.
• GS Paper III (Security & Disaster Management):
  • Occupational hazards and worker safety standards.
  • Lack of safety equipment and institutional response in hazardous sectors.
• GS Paper IV (Ethics):
  • Violation of dignity of labour, lack of informed consent, and state responsibility.
  • Ethical failures in governance and duty of care by public institutions.

 

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UPSC CURRENT AFFAIRS – 23 July 2025 Facts for Prelims (FFP):

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A Fungus Fighting Pineapple

Source:  PIB

Context: Indian researchers at Bose Institute have developed a fungus-resistant pineapple by overexpressing the AcSERK3 gene, offering a sustainable solution against Fusariosis, a devastating fungal disease.

About A Fungus Fighting Pineapple:

• What is it?

• • A genetically modified pineapple variety engineered to resist Fusarium moniliforme, a fungus causing Fusariosis, which destroys stems, leaves, and fruits.
  • Developed by Bose Institute (DST) scientists Prof. Gaurab Gangopadhyay and Dr. Soumili Pal.

• Threat of Fungal Disease to Pineapple:

• • Fusariosis leads to stem warping, blackened leaves, and internal fruit rot, causing heavy crop losses.
  • Traditional breeding methods struggle to counter fast-evolving fungal strains.

• How the Antifungal Pineapple Was Developed?

• • Scientists overexpressed the AcSERK3 gene, enhancing the plant’s natural defence mechanisms.
  • Agrobacterium-mediated transformation was used to insert the gene into pineapple explants.
  • Transgenic plants showed higher stress tolerance and enzyme activity, resisting fungal attacks.

• Key Features:
  • Enhanced disease resistance: Stronger defence against Fusarium.
  • Stable genetic trait: Low risk of gene deletion over generations.
  • Sustainable farming: Reduces reliance on chemical fungicides.
• Significance:

• • First documented case of overexpressing an inherent gene for fungal resistance in pineapples.
  • Potential for multi-fungal resistant varieties through long-term field trials.

 

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Ashokan Pillar

Source:  PTI

Context: India unveiled a replica of the Ashokan Pillar at Waskaduwa Sri Subhuthi Viharaya, Sri Lanka, commemorating Emperor Ashoka’s role in introducing Buddhism to the island.

About Ashokan Pillar:

• Origin and Historical Context

• • Built by Emperor Ashoka (3rd Century BCE) after the Kalinga war to communicate his moral transformation.
  • Marked the first architectural expression of Dhamma in India and across Asia.

• Structural and Artistic Features:

• • Pillars range 40–50 feet high, made from monolithic sandstone, mostly from Chunar and Mathura.
  • Topped with lotus bases and animal capitals, especially lions, symbolizing purity and sovereign dharma.

• Edicts and Moral Messaging:

• • Inscriptions in Brahmi, Kharosthi, Aramaic, and Greek carried messages of non-violence, welfare, and justice.
  • Strategically placed near trade routes, pilgrimage sites, and capitals to influence citizens morally.

• Symbolic Capitals:

• • Lion Capital from Sarnath represents both Buddha’s clan (Shakya) and royal authority. It is now India’s National Emblem.
  • Capitals carved in the round, reflect Persian-Achaemenid influence but reimagined in Buddhist context.

• Spread and Legacy:

• • Helped propagate Buddhism across South Asia, Sri Lanka, and Central Asia without forced conversions.
  • Serve today as symbols of ethical governance, religious tolerance, and Indo-Buddhist identity.

 

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Legacy of Radio Broadcasting in India

Source:  News on Air

Context: India celebrates National Broadcasting Day to mark the first-ever radio broadcast from the Bombay Station of the Indian Broadcasting Company in 1927.

About Legacy of Radio Broadcasting in India:

• Humble Beginnings: The Birth of Broadcasting

• • India’s radio journey began with amateur radio clubs in Calcutta (1923) and Madras (1924), long before state intervention.
  • On July 23, 1927, the Bombay station aired India’s first formal broadcast, under the Indian Broadcasting Company (IBC).

• Colonial Experiments and Failures:

• • IBC failed financially and was taken over by the British government in 1930 as the Indian State Broadcasting Service (ISBS).
  • In 1936, ISBS was restructured and renamed All India Radio (AIR), placed under the Department of Labour and Industries.

• Institutional Milestones Post-Independence:

• • Akashvani was formally adopted as the national broadcaster’s name in 1956.
  • Vividh Bharati was launched in 1957, featuring popular entertainment and film music.
  • AIR had just 6 stations in 1947, covering 2.5% of India’s area and 11% of population.

• AIR’s Role in National Development:

• • Used for nation-building: literacy drives, health campaigns, and agricultural awareness, especially in rural India.
  • Played a key role during freedom struggle, countering British propaganda and fostering unity.
  • Supported cultural preservation through folk music, classical programs, and national news services.

• External Services & International Outreach:

• • In 1939, external broadcasting began in Pashto and Afghan languages to counter Axis propaganda.
  • Today, the External Services Division airs programs in 11 Indian and 16 foreign languages, reaching over 100 countries.

 

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Vice-President of India – Re-election Process

Source:  IE

Context: Vice-President Jagdeep Dhankhar resigned from office citing health issues, nearly two years before his term ended.

About Vice-President of India – Re-election Process:

Constitutional Provisions

• Article 63: There shall be a Vice-President of India.
• Article 66(1): Vice-President is elected by members of an electoral college consisting of members from both Houses of Parliament (Lok Sabha and Rajya Sabha).
• Article 68(2): No fixed deadline for filling a vacancy caused by resignation, unlike Presidential elections which have a six-month deadline.

Election Procedure for Vice-President:

• Governed by the Presidential and Vice-Presidential Elections Act, 1952 and Election Rules, 1974.
• Conducted by the Election Commission of India (ECI).

Step-wise Timeline After Notification:

• Filing of Nominations (14 days): Candidates are given 14 days from the date of notification to submit their nomination papers. These must be backed by at least 20 proposers and 20 seconders from the electoral college.
• Scrutiny of Nominations (1 day): Nomination papers are examined by the Returning Officer to ensure they meet all legal and procedural requirements under the election rules.
• Withdrawal of Candidatures (2 days): Candidates who wish to withdraw from the contest can do so within two days after scrutiny, by submitting a written notice of withdrawal.
• Polling Date (Minimum 15 days after withdrawal): If an election is necessary, polling must be held at least 15 days after the last date of withdrawal to allow for printing of ballot papers and logistical readiness.
• Total Minimum Duration: From the date of notification to polling, the process takes at least 32 days, making it difficult to complete before the ongoing parliamentary session ends.

Members of Electoral College:

• Lok Sabha (House of the People) – elected members only.
  • Lok Sabha now has no nominated members as Constitutional Amendment 104^th removed provision for Anglo Indian nominations.
• Rajya Sabha (Council of States) – both elected and nominated members

Note:

• State Legislative Assemblies do not participate in the Vice-President’s election (unlike Presidential elections).

Voting System:

• Proportional Representation by means of Single Transferable Vote (STV).
• Secret ballot conducted by the Election Commission of India.

Role and Significance of Vice-President:

• Ex-officio Chairman of Rajya Sabha (Article 64)
• Acts as President in case of vacancy (Article 65)
• Key to maintaining parliamentary decorum, facilitating legislative debates, and handling disruptions.
• Plays a non-partisan constitutional role, distinct from the political executive.

 

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MiG-21

Source:  NDTV

Context: The Indian Air Force will retire its final two MiG-21 Bison squadrons in September 2025, concluding the aircraft’s six-decade-long service since its induction in 1963.

About MiG-21:

• What is MiG-21?
  • The MiG-21 is a Soviet-designed single-engine supersonic jet fighter known for its speed, agility, and compact frame. It was one of the world’s most widely used fighter aircraft during the Cold War.
• Developed By:
  • Designed by Mikoyan-Gurevich Design Bureau (USSR) in the 1950s.
  • India began licensed production via Hindustan Aeronautics Ltd (HAL) in the 1960s.
• Inducted in India:
  • First inducted into the Indian Air Force in 1963.
  • Became the backbone of the IAF during the 1970s to early 2000s.
• Key Features:
  • Capable of Mach 2.0+ supersonic speeds.
  • Operated in all-weather conditions with multi-role capacity.
  • Equipped with air-to-air missiles, bombs, and cannons.
  • Later variants like the MiG-21 Bison included radar upgrades and improved avionics.
• Operational Significance:
  • Played crucial roles in the 1965 and 1971 wars with Pakistan.
  • Served as India’s first non-Western origin combat aircraft.
• Limitations and Controversy:
  • Known as “flying coffins” due to over 400 crashes since the 1970s.
  • Over 200 pilots and 50 civilians have died due to MiG-related accidents.
  • Despite upgrades, lack of modern safety features and countermeasures made them increasingly risky.
  • Retirement repeatedly delayed due to shortages in IAF fighter strength.
• Replacement Plan:
  • Phased out in favour of indigenously developed Tejas Mk-1A fighter jets.
  • Current IAF strength down to 29 squadrons against a sanctioned strength of 42.5.

 

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The United States has announced its decision to withdraw from UNESCO

Source:  TH

Context: The United States has announced its decision to withdraw from UNESCO by December 2026, citing anti-Israel bias and UNESCO’s recognition of Palestine—just two years after rejoining the organization.

About The United States has announced its decision to withdraw from UNESCO:

• What is UNESCO?
  • The United Nations Educational, Scientific and Cultural Organization (UNESCO) is a specialized UN agency committed to fostering global peace through education, science, culture, and information exchange.

• Founded: November 16, 1945 (Constitution came into force in 1946)
• Headquarters: Paris, France
  • Born out of post–World War efforts to rebuild global understanding and collaboration.

• Key Functions:

• • Promote education access and literacy across member states.
  • Safeguard world heritage—both cultural and natural—through its World Heritage Sites.
  • Foster scientific cooperation (e.g., tsunami warning systems, biosphere reserves).
  • Protect intangible heritage and traditional knowledge (e.g., Nubian Monuments rescue).
  • Set ethical standards on digital governance, AI, and genetic research.
  • Advocate for freedom of expression, copyright protection, and global knowledge equity.

• Notable Initiatives:

• • Man and Biosphere Programme (1971)
  • World Heritage Convention (1972)
  • Convention for Safeguarding Intangible Heritage (2003)
  • Global Education Coalition (2020) during COVID-19
  • Ethics of Artificial Intelligence Recommendation (2021)

• Strategic Importance:

• • Helps reduce global inequality in education and culture.
  • Strengthens peacebuilding through intercultural dialogue.
  • Supports disaster preparedness, especially in climate-vulnerable regions.
  • Acts as a clearinghouse for scientific and cultural data exchange.

 

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UPSC CURRENT AFFAIRS – 23 July 2025 Mapping:

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Karenia mikimotoi-induced toxic algal bloom

Source:  DD News

Context: A massive Karenia mikimotoi-induced toxic algal bloom off South Australia has killed over 400 marine species, disrupting fisheries and tourism.

• This climate-aggravated bloom, spanning 4,500 sq. km, is being termed a natural disaster by state authorities.

About Karenia mikimotoi-induced toxic algal bloom:

• What is Karenia mikimotoi?

• • A toxic dinoflagellate species responsible for harmful algal blooms (HABs) globally.
  • Produces reactive oxygen species and ichthyotoxins—not directly harmful to humans but deadly to marine organisms.

• Varieties and Relatives:

• • Belongs to the Karenia genus, also includes Karenia brevis (known for Florida red tides and brevetoxins).
  • K. mikimotoi is less toxic to humans, but lethal to fish, shellfish, echinoderms, and marine invertebrates due to oxygen depletion.

• Key Features:

• • Lacks a cellulose cell wall (athecate) – fragile, easily ruptured in water.
  • Causes hypoxic or anoxic conditions as large blooms decompose.
  • Triggers massive fish kills, particularly during marine heatwaves.
  • Toxins affect fish gills, cause stress, disorientation, and mortality.
  • No known human illness from ingestion, but indirect impacts are severe.

About South Australia:

• Geographic Location:

• • South-central Australia, bordered by Western Australia, Northern Territory, Queensland, New South Wales, and Victoria.
  • Southern boundary opens to the Great Australian Bight (Southern Ocean).
  • Capital: Adelaide

• Geographical Features:

• • Area: ~983,482 sq. km (4th largest Australian state).
  • Climate: Dryest state in Australia and Mediterranean along coasts, arid inland.
• Key Landforms:
  • Mount Woodroffe: Highest peak (1,435 m)
  • Lake Eyre: Lowest point, ~15 m below sea level.
  • Nullarbor Plain, Eyre Peninsula, Mount Lofty Ranges, and Flinders Ranges
  • Major Water Body: Murray River—the state’s only significant perennial river.

 

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