Kolkata developers create shade-first walking map for tropical city heat

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A team has developed Chhaya, a navigation tool designed for Kolkata's intense tropical climate. The open-source application calculates real-time building shadows using solar positioning and urban mapping. It routes pedestrians through shaded paths instead of prioritizing only the shortest distance. The platform aims to reduce heat exposure for walkers, offering features like group hiking coordination and voice-guided directions.

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