UPSC Current Affairs 21 April 2026

• Historic Summit: Prime Minister Modi and President Lee Jae Myung held bilateral talks at Hyderabad House, New Delhi.
• 2026–2030 Roadmap: Adoption of the Joint Strategic Vision for India-ROK Special Strategic Partnership, outlining cooperation for the next five years.
• $50 Billion Trade Goal: A new target to double bilateral trade from the current $27 billion to $50 billion by 2030.
• Major Agreements: Signing of 15 Memorandums of Understanding (MoUs) covering AI, semiconductors, shipbuilding, and energy security.
• Global Initiatives: South Korea officially joined the International Solar Alliance (ISA) and the Indo-Pacific Oceans Initiative (IPOI) during this visit. 

• Elevation of Ties: The relationship was upgraded from a "Strategic Partnership" (2010) to a Special Strategic Partnership in 2015.
• 2+2 Dialogue: Agreement to hold the inaugural Defence and Foreign Affairs 2+2 Dialogue at the Vice-Minister level.
• Indo-Pacific Alignment: Both nations share a vision for a "free, open, peaceful, and inclusive Indo-Pacific" based on the rule of law.
• Diplomatic Milestones: The year 2023 marked 50 years of diplomatic relations (established in 1973), as noted by the Ministry of External Affairs. 

• CEPA Upgrade: Resumption of fast-track negotiations to upgrade the Comprehensive Economic Partnership Agreement (CEPA) to address trade imbalances.
• Industrial Cooperation Committee (ICC): A new ministerial-level platform to oversee investments in critical sectors like semiconductors and secondary batteries.
• Korean Industrial Townships: Plan to establish dedicated industrial parks in India to facilitate investment from Korean SMEs.
• Digital Bridge: Launch of the India-Korea Digital Bridge focusing on AI, semiconductors, and IT innovation. 

• Shipbuilding: A specific framework for partnership in shipbuilding, shipping, and maritime logistics was adopted in April 2026.
• Energy Security: Joint commitment to secure supply chains for critical minerals, naphtha, and clean energy resources.
• Defence Projects: Deepening cooperation in land and naval systems, including the famous K9 Vajra-T self-propelled howitzers. 

• Historical Link: Ancient ties trace back to Princess Suriratna (Queen Heo Hwang-ok) of Ayodhya, who married a Korean king in 48 AD.
• Friendship Year: Both nations have designated 2028–2029 as the "Year of India-ROK Friendship."
• Mumbai-Korea Centre: Announcement of a new cultural hub in Mumbai to promote K-pop and film industry collaborations.
• Education: Opening of the first Korea Education Centre in India (January 2026) to boost language and academic exchanges. 

• State-Wide Grandeur: Large-scale religious ceremonies and rallies took place in Kalaburagi, Belagavi, and Hyderabad, organized by committees like the Basava Jayanti Utsav Samiti 2026.
• Democratic Inspiration: Continued government emphasis on the Anubhava Mantapa (the first Parliament of the world) as a model for modern Indian democracy and the design of Bharat Mandapam. 

• Era: 12th-century philosopher, statesman, and poet (born 1131 AD in Basavana Bagewadi, Karnataka).
• Political Role: Served as a Chief Minister in the court of King Bijjala I of the Kalachuri dynasty.
• Lingayat Founder: He is the founding saint of the Lingayat sect, which emphasizes a direct, personal connection with the divine through the Ishtalinga. 

• Caste Abolition: Fought against the rigid caste system, believing human worth is determined by conduct, not birth.
• Gender Equality: Pioneered women’s empowerment; women were encouraged to participate in spiritual and philosophical debates.
• Kayaka (Work is Worship): Preached that all honest manual labour is divine and carries equal spiritual value.
• Dasoha (Service): Promoted the concept of selfless service and sharing the fruits of one's labour with society. 
• Vachanas: Spread social awareness through simple Kannada poetry known as Vachanas, making complex philosophy accessible to common people.

• Anubhava Mantapa: Established a spiritual assembly in Kalyana, often cited by the Ministry of Culture as the world's first parliament for open social dialogue.
• Rejection of Rituals: Opposed blind superstitions, elaborate temple rituals, and the authority of priestly intermediaries. 

• It served as a critical platform for 82 participants—including students and early-stage founders—to gain structured guidance on scaling food ventures.

• Competency Building: To enhance participants' knowledge of the entire food business lifecycle, from idea validation to market launch.
• Structured Guidance: To provide a roadmap for navigating the competitive and innovation-driven food market.
• Awareness: To inform entrepreneurs about institutional support, regulatory requirements, and available financial assistance. 

• Technical Aspects: Packaging technologies, food processing methods, machinery selection, and Cold Chain Management.
• Managerial Skills: Branding, marketing strategies, pricing techniques, and Supply Chain Management.
• Regulatory & Legal: Food safety regulations (FSSAI), corporate laws, governance, and taxation.
• Digital Growth: Leveraging e-commerce, digital marketing, and customer engagement tools. 

• Incubation Access: Participants were introduced to NIFTEM-T’s incubation facilities and pilot plant technologies.
• Financial Linkages: Detailed discussions were held on Grant-in-Aid schemes and public policies supporting food startups.
• Global Reach: Special focus on export opportunities to help local businesses scale internationally. 

• Rewriting History: The study proved that Jamun has been continuously present in India for at least 55 million years, far longer than previously estimated.
• Fossil Discovery: The discovery of 11 well-preserved fossil leaves from the Kasauli Formation in Himachal Pradesh, dating back to the Early Miocene (~20 million years ago), provided the missing link in its evolutionary timeline.
• Gondwanan Roots: The research suggests an East Gondwanan origin for the genus, dating back nearly 80 million years. 

• India as the "Cradle": The study identifies India not just as a transit zone but as the primary site of diversification.
• New Fossil Species: The discovered fossils were identified as a new species named Syzygium paleosalicifolium.
• Earlier Timeline: While molecular data previously estimated an origin around 51 million years ago, Indian fossil records now push its presence back to the Early Eocene (~55 million years ago).
• Dispersal Pattern: From India, the genus dispersed to Southeast Asia and Australia, reversing the previously held theory of its migration. 

• Biodiversity Conservation: Highlights India’s role as a long-term refuge and hub for tropical flora.
• Climate Insights: Understanding how Jamun survived millions of years of climate shifts helps scientists predict how vegetation might react to modern global warming.
• Ecological Planning: Strengthens the case for preserving indigenous Indian fruit varieties as part of national biodiversity strategies. 

• Common Name: Western honey bee or European honey bee.
• Distribution: Native to Europe, Western Asia, and Africa; introduced to every continent except Antarctica.
• Social Structure: Eusocial insects with a single queen, thousands of workers (females), and a few drones (males).
• Genome: Its genome assembly (Amel_HAv3.1) has been refined to chromosome-length scaffolds, aiding research into behavioural genetics and disease resistance. 

• Primary Pollinator: Responsible for pollinating roughly 80% of global agricultural crops, including almonds, apples, and berries.
• Commercial Products: Commercially exploited for honey, wax, propolis, and royal jelly, which are used in medicines and cosmetics.
• Bioindicators: Used as environmental sensors to monitor heavy metals and pesticide pollutants across large geographic areas. 

• Varroa Mite: The parasite Varroa destructor remains the most significant threat, often wiping out entire colonies.
• Colony Collapse Disorder (CCD): A phenomenon where worker bees abruptly disappear, primarily affecting large commercial apiaries.
• Invasive Potential: Outside its native range, it can outcompete indigenous bees, such as Apis cerana in India, for floral resources. 

• Length: Approximately 6,300 kilometers (3,915 miles).
• Source: Originates in the Tibetan Plateau at Jari Hill (Tanggula Mountains).
• Path: Flows exclusively through China, passing through 11 provincial-level regions including Tibet, Sichuan, Chongqing, Hubei, and Jiangsu.
• Mouth: Empties into the East China Sea near Shanghai. 

• GDP Engine: The Yangtze River Economic Belt accounts for over 40% of China's national GDP.
• Population Hub: Home to more than 400 million people—nearly one-third of China's entire population.
• "Granary of China": The basin produces nearly half of China’s crops, including two-thirds of its rice.
• Maritime Lifeline: It is the world’s busiest inland waterway; ports along the trunk stream handled a record 4 billion tons of cargo in late 2024/early 2025. 

• Three Gorges Dam: The world's largest hydroelectric power station, providing about 11% of China's power.
• Underwater Tunnels: In addition to the new 2026 rail tunnel, the river is crossed by numerous bridges and metro lines, including Shanghai's first metro line to cross the river (April 2026).
• Connectivity: Serves as the primary artery for the "West-to-East Power Transmission" initiative. 

• Protection Law: The Yangtze River Protection Law (effective since March 2021) was China's first legislation dedicated to a specific river basin.
• Industrial Shift: Over 97% of hazardous chemical enterprises in the river's economic belt have been relocated or closed to prevent pollution.
• Endangered Species: The river is the only habitat for the Yangtze Finless Porpoise and was the former home of the now-extinct Baiji (Yangtze River Dolphin).
• Sedimentation: Recent studies have shown that tidal energy is shifting sediment from the Great Yangtze Bank, helping to "build land" and grow the delta. 

• Location: Situated in the Paonta Valley of Sirmaur District, Himachal Pradesh.
• Area: It is one of the smallest national parks in India, covering approximately 27.88 square kilometers.
• Landscape: Characterized by Sal forests, grassy glades (khud), and perennial streams (chhos) that merge into the Shivalik hills.
• Connectivity: It borders the Kalesar National Park (Haryana) to the south and is part of the larger trans-boundary Shivalik ecosystem. 

• Fauna: The park is home to Goral, Sambhar, Spotted Deer (Chital), Barking Deer, and Wild Boar. It also hosts predators like the Leopard and, occasionally, wandering Tigers and Elephants.
• Avian Life: A hotspot for birdwatchers, featuring over 150 species including the Grey Hornbill, Red Jungle Fowl, and various migratory raptors.
• Flora: Dominant vegetation includes Sal (Shorea robusta) trees, Semal, and diverse medicinal herbs. 

• Established: Originally declared a wildlife sanctuary in 1958.
• Upgrade: It was upgraded to a National Park in 2010.
• Naming: Renamed in honour of Col. Sher Jung, an eminent writer, freedom fighter, and hunter-turned-conservationist who was instrumental in the region's forest management. 

• Invasive Species: The park has faced issues with invasive weeds like Lantana, which the recent restoration project has sought to eradicate.
• Human-Wildlife Conflict: Due to its small size and proximity to villages, managing crop-raiding by wild boars and sambars is a priority for the forest department.
• Climate Sensitivity: As a low-altitude tropical forest, it is particularly sensitive to changes in the monsoon pattern and forest fires.

• The "Gate of Egypt": Known as the easternmost gateway to the Nile Delta, it served as the first line of defence against invasions from Asia.
• Location: Situated about 30 km southeast of Port Said in the northern Sinai Peninsula.
• Commercial Hub: It was a vital port city and customs post, famous for its flax production, grain exports, and the production of "Pelusian" beer. 

• Battle of Pelusium (525 BCE): A legendary conflict where the Persian King Cambyses II defeated Pharaoh Psamtik III. According to lore, the Persians used cats (sacred to Egyptians) as shields to prevent the Egyptian archers from firing.
• Roman Era: The city remained a strategic stronghold and was later the capital of the Roman province of Augustamnica.
• Decline: The city eventually fell into ruin after the Pelusiac branch of the Nile dried up and the region was hit by the Plague of Justinian (541 CE). 

• Hydraulic Sophistication: The newly discovered temple features complex red-brick drainage systems and cisterns designed to bring in and circulate water from the Nile for rituals.
• Timeline of Use: Evidence suggests the temple was used continuously from the 2nd century BCE to the 6th century CE.
• Zeus Temple (2022): Just a few years prior, archaeologists found another temple dedicated to Zeus-Kasios, further proving the city's role as a diverse religious center. 

• Region: Inhabit the high-altitude evergreen forests of the Western Ghats in Kerala (Idukki and Wayanad) and Tamil Nadu (Coimbatore and Tirunelveli).
• Settlements: Their hamlets are called 'Kudis'.
• Isolation: Many communities live in extreme isolation; for example, Edamalakkudy is located deep within the Eravikulam National Park and requires a long trek to reach. 
• The Name: "Muthuvan" is derived from the word 'Muthuku' (back), referring to their tradition of carrying children and belongings on their backs.

• Bachelor Dormitories: They maintain a unique social system where young men stay in 'Chavadis' (bachelor halls) and young women in separate dormitories to learn tribal customs.
• Language: They speak a distinct dialect that is a mix of Tamil and Malayalam.
• Governance: Each Kudi is led by a headman called a 'Kani', who settles disputes and oversees rituals. 

• Agriculture: Traditionally practiced shifting cultivation; now primarily focused on organic ragi, cardamom, and lemon grass.
• Forest Produce: Experts in collecting non-timber forest products like wild honey, black dammar, and medicinal herbs.
• Environment: They are considered the "original conservationists" of the Shola forests and grasslands. 

• Marriage: Their wedding ceremonies are simple and often involve a symbolic "disappearance" of the couple into the forest before being accepted by the community.
• Religion: They worship nature and spirits, with a primary deity known as 'Kannaki' (connected to the Tamil epic Silappathikaram). 

• Connectivity: Lack of all-weather roads to remote Kudis limits access to emergency healthcare.
• Human-Wildlife Conflict: Living inside Tiger Reserves and National Parks often leads to conflict with elephants and leopards.
• Digital Divide: While Edamalakkudy is a "digital panchayat," consistent internet and power supply remain intermittent.

• Source: Originates high in the Rocky Mountains of Colorado (La Poudre Pass).
• Length: Approximately 1,450 miles (2,330 km).
• Basin: Covers 246,000 square miles, spanning seven US states (WY, CO, UT, NM, AZ, NV, CA) and two Mexican states (Baja California, Sonora).
• The "End": Historically emptied into the Gulf of California, but due to heavy diversion, it rarely reaches the sea today. 
• Drinking Water: Provides water for nearly 40 million people, including major cities like Los Angeles, Las Vegas, Phoenix, and Denver.

• Agriculture: Irrigates 5.5 million acres of farmland, producing about 15% of US crops and 90% of the US's winter vegetables.
• Hydropower: The river's dams (Hoover and Glen Canyon) generate over 12 billion kilowatt-hours of electricity annually for the regional grid. 

• Lake Mead (Hoover Dam): The largest reservoir in the US by capacity; it is currently the primary indicator for "Shortage Conditions."
• Lake Powell (Glen Canyon Dam): The second-largest reservoir; crucial for "banking" water for the Upper Basin states.
• All-American Canal: The largest irrigation canal in the world, carrying river water to California’s Imperial Valley. 

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