Environment & Ecology Current Affairs - 2026-04-09

Background: The Kolkata Metro is India's oldest metro system, serving the city since 1984. Over the years, it has undergone several phases of expansion to improve urban connectivity. The development of an underwater section was a long-standing ambition to overcome geographical challenges and enhance the network's reach. Current Context: On April 9, 2026, Prime Minister Narendra Modi inaugurated the first underwater metro line in Kolkata. This historic section of the East-West Metro corridor passes beneath the Hooghly River, marking a significant engineering achievement for India. The inauguration ceremony was held at Esplanade Metro Station, with the first passenger services commencing shortly after. Impact: The underwater metro is expected to revolutionize public transportation in Kolkata by significantly reducing travel time between Howrah and Salt Lake Sector V. This improved connectivity is anticipated to boost economic activity, facilitate easier commuting for a large population, and potentially enhance tourism by making key attractions more accessible. The project also showcases India's growing expertise in complex infrastructure development and its commitment to modernizing urban transport.