BITS Hyderabad Develops Refrigerant-Free Air-Conditioning Tech Using 40-50°C Waste Heat & Silica Gel

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).

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

Climate change is making mid-flight turbulence, especially clear air turbulence (CAT), more frequent and severe. A 2023 study found severe CAT over the North Atlantic rose over 55% in four decades. For exam aspirants, this links climate change impacts to aviation safety, DGCA's regulatory role, and passenger safety protocols.

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’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.

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.

131 GW Canal-Top Solar Potential: MNRE Pilot Scheme, PM Surya Sarovar Yojana Boost Land-Free Renewable Energy

India's vast canal network offers a land-free path to solar power via Canal-Top Photovoltaics (CTPV). With land acquisition for solar projects becoming expensive, CTPV saves land, reduces water evaporation, and improves panel efficiency. A 2024 assessment estimates 131 GW potential, but high costs and structural challenges limit deployment. The PM Surya Sarovar Yojana (floating solar) signals growing policy interest in land-neutral solar.

National Green Hydrogen Mission: 400-500 Buses/Trucks by 2030, Trials on 20 Highways

India's National Green Hydrogen Mission targets 400-500 hydrogen-fuelled heavy-duty buses and trucks by 2030. To achieve this, 70 vehicles have been sanctioned for trials across 20 highways, with the goal of achieving operating cost parity with diesel in 2-3 years.