Climate Change Intensifies Clear Air Turbulence: 55% Rise in Severe CAT Over North Atlantic, DGCA Investigates Air India Incident

India’s First LNG-Diesel Dual-Fuel Train Launched by ICF; Compare with Hydrogen Train for UPSC

Indian Railways launched its first LNG-diesel dual-fuel train from Sabarmati on September 27, 2026, following the hydrogen train debut in July. This is a high-yield topic for UPSC Prelims (Science & Tech, Environment) and Mains (GS-3: infrastructure, alternative fuels). The article also explains Kavach (Automatic Train Protection system) – a recurring Prelims favourite.

NPCIL Commences Fuel Loading at RAPP-8: 4th Indigenous 700 MWe PHWR in Fleet Mode

NPCIL has started initial fuel loading (IFL) at Unit 8 of Rajasthan Atomic Power Project (RAPP-8), a 700 MWe indigenous pressurised heavy water reactor (PHWR). This marks a major step in India's fleet-mode nuclear expansion, with commercial operation expected in 2026-27. For exams: understand PHWR technology, AERB's role, and the commissioning sequence (IFL → FAC → power generation).

Kudankulam Nuclear Reactor Costs Surge 55%: Impact on India's Nuclear Expansion Plans

Cost of four under-construction nuclear reactors at Kudankulam has risen by 55% to ₹1,38,330 crore, driven by Russia-Ukraine war. This poses a challenge to India's ambitious nuclear expansion plans and could increase electricity tariffs, especially as the government opens the sector to private participation.

Amit Shah Flags Off India's First LNG-Powered Train: Dual-Fuel Tech to Cut Diesel Use by 40%

India's first LNG-powered train, flagged off by Amit Shah from Sabarmati, marks a major shift towards cleaner fuel in railways. The dual-fuel system can replace up to 40% of diesel, cutting emissions and saving Rs 23.9 lakh per year per rake. This is a key initiative for sustainable transportation and energy efficiency.

Indian Railways Launches First LNG-Diesel Dual-Fuel DEMU Train; 40% Diesel Replacement, Rs 23.9 Lakh Annual Savings

Indian Railways has launched its first LNG-diesel dual-fuel DEMU train from Sabarmati, Gujarat, capable of replacing 40% diesel consumption. This follows the hydrogen train launched in July 2026, marking a strategic shift towards alternative fuels to reduce costs and emissions. For exam aspirants, this is a key case study in energy transition and infrastructure modernization.

Doppler Weather Radars: 51st DWR Inaugurated at Sambalpur Under Mission Mausam

India's 51st Doppler Weather Radar was inaugurated in Sambalpur, Odisha, boosting weather forecasting under Mission Mausam. This expansion enhances early warning systems for cyclones, thunderstorms, and heavy rainfall, a core exam topic for disaster management and science-tech.

India Crosses 300 GW Non-Fossil Capacity, Targets 500 GW by 2030; Solar Leads at 164.59 GW

India has crossed 300 GW non-fossil fuel capacity (300.50 GW as of July 31, 2026), accounting for over 54% of total installed capacity. Solar power leads at 164.59 GW. The country is on track for 500 GW by 2030. Key schemes like PM Surya Ghar have benefited 19 lakh households with zero electricity bills. This milestone is crucial for exams on energy transition, climate policy, and government schemes.

RDSO Deploys AI on Railways: ITMS, Kavach SIL-4, Accidents Down from 135 to 11

Indian Railways' RDSO is deploying AI-driven systems (ITMS, WILD, Tri-Nethra, Kavach) to enhance safety, resulting in a dramatic drop in consequential accidents from 135 (2014-15) to 11 (2025-26). Key for exams: data on accident reduction, Kavach's SIL-4 certification, and AI applications in railway safety.