UPSC Current Affairs 28 April 2026

• Unprecedented Access: It provides 100% duty-free access for all 8,284 Indian export products to the New Zealand market.
• Investment Commitment: New Zealand has committed to facilitating $20 billion (₹1.6 lakh crore) in FDI to India over the next 15 years. 

• Zero-Duty Access: Total elimination of tariffs on all Indian goods entering New Zealand from day one.
• Sector Gains: Significant boost for textiles, leather, footwear, engineering goods, pharmaceuticals, and MSMEs.
• Regulatory Ease: Recognition of Indian pharmaceutical inspection reports (US FDA/UK MHRA standard), reducing red tape.
• Traditional Medicine: New Zealand's first-ever recognition of India’s AYUSH systems (Ayurveda, Yoga, etc.) alongside Māori health practices. 

• Phased Market Access: India has opened 70% of its tariff lines, covering 95% of New Zealand's current exports.
• Duty Reductions: Immediate or phased cuts for wool, wine, wood, coal, and fruits like avocados and blueberries.
• Agricultural Tech: New Zealand will provide technical expertise to Indian farmers for kiwifruit, apple, and honey production through Action Plans. 

• Professional Visas: A new "Temporary Employment Entry" visa for 5,000 skilled Indians annually (3-year stay) for roles in IT, healthcare, and engineering.
• Student Benefits: Extended post-study work visas (up to 4 years for PhDs) and removal of caps on Indian student numbers.
• Working Holidays: 1,000 young Indians can take 12-month working holiday multiple-entry visas annually. 

• Dairy Products: Milk, cheese, butter, and cream.
• Agricultural Items: Onions, sugar, pulses (chana/peas), and certain oils.
• Others: Precious metals (gold/silver), gems and jewellery, and aluminium. 

• Trade Target: Both nations aim to double bilateral trade from ~$2.4 billion to $5 billion within five years.
• Implementation: The agreement is expected to be ratified and fully operational by late 2026.
• Gateway Strategy: New Zealand serves as a strategic gateway for India into the wider Pacific Island region.

• Decentralised Model: Unlike telecom giants, PM-WANI allows small shopkeepers (Public Data Offices or PDOs) to sell high-speed internet without expensive licences.
• Affordability: Data plans under this scheme are designed for the masses, with some starting as low as ₹6.
• Interoperability: New 2026 updates allow roaming between different Wi-Fi providers, so users don't need to sign up multiple times.
• Financial Sustainability: To help shop owners, the government mandated that ISPs provide broadband to these small "data offices" at rates no more than twice the consumer price. 

• Data Offloading: The government wants to shift heavy data traffic from congested mobile networks (4G/5G) to high-capacity Public Wi-Fi.
• Smart City Integration: Encouraging municipal bodies to allow Wi-Fi equipment on "street furniture" like lamp posts and bus stops.
• New Revenue Models: Exploring ways for providers to earn through consent-based promotional content and digital advertising. 

• Man-in-the-Middle (MitM): Hackers position themselves between your device and the router to intercept login credentials and financial data.
• Evil Twin Attacks: Attackers set up fake hotspots with names like "Free_Airport_WiFi" to trick users into connecting.
• Honeypots & Malware: Some networks are designed solely to inject malware or ransomware into connected laptops and smartphones.
• Unencrypted Traffic: Many public hotspots still fail to use modern encryption, leaving data like emails and personal files vulnerable. 

• Use a VPN: Essential for encrypting your data even on unsecured networks.
• Stick to HTTPS: Only enter passwords on websites that show the padlock symbol in the address bar.
• Disable Auto-Connect: Prevent your phone from jumping onto unknown "free" networks without your permission.
• Turn Off Sharing: Ensure "File and Printer Sharing" is disabled in your system settings before connecting.
• Avoid Sensitive Tasks: Do not perform online banking or access work portals on a public Wi-Fi connection; use mobile data instead.

• One side of the tunnel has been opened for public trial operations and safety assessments, with a full inauguration expected in the first half of 2026

• Trial Operations: One tube of the new twin tunnel was opened to commuters for testing and safety evaluation.
• Near Completion: The project has achieved 86% physical progress and is on track for a formal opening by June 2026.
• Modernization: It is being hailed as a major transformation of a "historically congested and accident-prone" section of the Mumbai–Pune–Bengaluru corridor.
• Safety Milestone: The new route bypasses the hazardous "S-curve" in the ghat, which was previously responsible for approximately 30 accidents per year.

• Structure: A twin-tube tunnel with three lanes in each tube (six lanes total).
• Length: The overall project length is approximately 6.43 km, with the tunnels themselves being roughly 1.3 km long each.
• Cost: The total capital investment for the project is approximately ₹926 Crore.
• Capacity: Designed to handle nearly 1.5 lakh passenger car units (PCU) daily, meeting traffic needs for the next 25 years. 

• Surveillance: Equipped with high-intensity CCTV cameras and speed monitoring systems linked to a centralized control room.
• Emergency Systems: Includes specialized ventilation systems, emergency escape passages, and clearly marked fire extinguisher points.
• Lighting: Features modern high-intensity LED lighting to eliminate previous issues with darkness inside the old tunnel. 

• Definition: A broad group of plant diseases caused by fungi (85% of cases), bacteria, or viruses that produce localized lesions on foliage.
• Primary Pathogens:
  • Fungi: Cercospora, Septoria, Alternaria, and the newly identified Colletotrichum cigarro.
  • Bacteria: Common in stone fruits (cherry, plum) and vegetables like cucumbers.
  • Viruses: Often lead to "mosaic" patterns and ring spots rather than simple lesions. 

• Early Signs: Small, water-soaked or discoloured spots (yellow, brown, or black) often surrounded by a yellow halo.
• Progression: Spots enlarge and coalesce (merge), creating large dead patches of tissue.
• Secondary Effects: Premature leaf drop (defoliation), stunted growth, and reduced fruit quality due to impaired photosynthesis. 

• Weather: Thrives in high humidity (>95%), warm temperatures (20–30°C), and prolonged leaf wetness.
• Transmission: Pathogens spread rapidly via wind-blown spores, splashing rain, contaminated irrigation water, and dirty garden tools.
• Overwintering: Many fungi survive the winter on fallen leaf debris, re-infecting new growth in the spring. 

• Sanitation: Rake up and burn fallen leaves to remove sources of infection.
• Watering Habits: Use drip irrigation at the base of plants; avoid overhead sprinklers that wet the foliage.
• Spacing: Ensure adequate space between plants to improve air circulation and reduce humidity.
• Chemical Control: Use fungicides like Hexaconazole or copper-based sprays, but only as a preventive or in severe cases.
• Natural Remedies: Spraying a 5% Neem leaf extract or neem oil has shown effectiveness in containing early infections.

• Definition: An acute systemic vasculitis (inflammation of blood vessels) that primarily affects medium-sized arteries, most notably the coronary arteries.
• Target Group: Affects children, with 80-90% of cases occurring in those under 5 years of age (peak age 6 months to 2 years).
• Impact: It is the leading cause of acquired heart disease in children in developed nations. 

• C - Conjunctivitis: Redness in both eyes without thick discharge.
• R - Rash: A red, nonspecific rash, often on the trunk or genital area.
• E - Extremity changes: Redness or swelling of palms/soles, followed by skin peeling (desquamation).
• A - Adenopathy: Swollen lymph nodes, usually on one side of the neck (>1.5 cm).
• M - Mucosal changes: Red, dry, or cracked lips and a "strawberry tongue". 

• Coronary Artery Aneurysms (CAA): Ballooning of the heart's arteries, occurring in 20–25% of untreated cases.
• Heart Attack (Myocardial Infarction): Caused by blood clots (thrombosis) forming within an aneurysm.
• Myocarditis: Inflammation of the heart muscle, seen in up to 70% of patients during the acute phase. 

• IVIG (Intravenous Immunoglobulin): High-dose antibodies given via IV to reduce inflammation and lower CAA risk to less than 5%.
• Aspirin: Used initially in high doses for inflammation and later in low doses to prevent blood clots.
• Biologics: For patients who do not respond to IVIG, newer therapies like Infliximab or Anakinra may be used.

• Classification: It belongs to the cyanobacteria family, which are microscopic organisms capable of photosynthesis and are often found in water bodies.
• Characteristics: These organisms are vital for oxygen production and nutrient cycling in aquatic ecosystems. 

• Medicine: Potential for developing new drugs and pharmacological compounds.
• Agriculture: Its properties may be used to create efficient biofertilizers, reducing the need for chemical alternatives.
• Nutrition: It could be processed into nutrient-rich supplements to boost human immunity and overall health, similar to Spirulina. 

• Biodiversity Mapping: The discovery underscores the importance of protecting sacred water bodies like Pushkar Lake from pollution to preserve rare microbial life.
• Research Hub: This finding establishes the Central University of Rajasthan as a leading center for microbiological research in India. 

• Pushkar Mela 2026 is scheduled for November 17–24, 2026.
• The Pushkarmema curajae discovery is a scientific milestone reported in early 2026 to bring attention to the ecological health of the Pushkar region.
• The genus name Pushkarmema is a tribute to the town of Pushkar, and the species name curajae is an acronym for the Central University of Rajasthan, where the research team is based.

•  A new X-band radar was commissioned at the High-Altitude Cloud Physics Laboratory (HACPL) to monitor the Western Ghats' complex terrain.
• Mission Mausam Milestone: The government has committed to expanding the national DWR network to 126 radars by the end of 2026, up from 48 currently operational.
• Indigenous Technology: New installations, including a recent X-band DWR in Jorhat, Assam, are built indigenously by ISRO and Bharat Electronics Limited (BEL).
• Enhanced Nowcasting: The latest radars are now being integrated with AI-powered models to provide hyper-local weather alerts (nowcasting) within a 3-hour window. 

• Doppler Principle: It measures the change in frequency of radio waves reflected off moving objects (like raindrops). If rain moves toward the radar, the frequency increases; if away, it decreases.
• Velocity Data: Unlike conventional radar that only shows where rain is, DWR shows how fast it is moving, helping identify storm rotation and potential tornadoes.
• Dual-Polarization: Modern "Dual-Pol" radars send both horizontal and vertical pulses, allowing meteorologists to distinguish between rain, hail, snow, and even debris. 

Band	Frequency	Primary Use
S-Band	2–4 GHz	Best for long-range surveillance (up to 400–500 km) and tracking intense cyclones.
C-Band	4–8 GHz	Balanced range and sensitivity; used for tracking cyclones and medium-range weather.
X-Band	8–12 GHz	Short-range but high sensitivity; ideal for detecting lightning, thunderstorms, and cloud development.

• Disaster Management: Essential for early warnings of cloudbursts, landslides, and flash floods in ecologically sensitive zones like the Himalayas and Western Ghats.
• Aviation Safety: Helps pilots detect severe turbulence and wind shear that might not be visible to the naked eye.
• Agricultural Impact: Accurate 3-hour "nowcasts" allow farmers to take immediate action to protect standing crops during sudden storms. 

• Current Status: As of February 2026, there are 48 operational DWRs across India.
• Geographical Reach: Approximately 87% of India's landmass is currently covered by the radar network.
• Future Planning: New sites are prioritized for Bengaluru, Raipur, Ahmedabad, Ranchi, and Port Blair to ensure "no weather hazard goes undetected".

• Meaning: The name literally means "Sons of Manasseh" in Hebrew.
• Ancestry: They claim descent from the Tribe of Manasseh, one of the Ten Lost Tribes of Israel exiled by the Assyrian Empire in 722 BCE.
• Ethnic Background: They are primarily from the Kuki, Mizo, and Chin tribal groups residing in Manipur and Mizoram.
• Migration Legend: Their oral history describes a 2,700-year exodus through Persia, Afghanistan, Tibet, and China before reaching Northeast India. 

• Shift from Christianity: Most members were originally converted to Christianity by 19th-century missionaries before a "" movement began in the late 20th century.
• Official Recognition: In Judaising 2005, Israel’s Sephardi Chief Rabbi Shlomo Amar officially recognised them as "seed of Israel," clearing the path for their migration.
• Conversion Requirement: Unlike standard Jewish immigrants, they must undergo a formal Orthodox conversion once in Israel to obtain full citizenship. 

• New Homes: The 2026 arrivals are being settled in northern Israeli cities like Nof HaGalil, Kiryat Yam, and the Galilee region.
• Government Support: The plan includes Hebrew language classes (Ulpan), conversion training, housing aid, and employment guidance.
• Military Service: Over 200 Bnei Menashe immigrants are currently serving in the Israel Defence Forces (IDF), with many receiving commendations. 

• Recent Arrived: ~250 (Batch 1 of Operation Wings of Dawn).
• Already in Israel: ~5,000 (migrated over the last 30 years).
• Remaining in India: ~6,000–7,000 (scheduled for Aliyah by 2030).
• 2026 Target: A total of 1,200 immigrants is expected to be relocated by the end of this year. 

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