Eminent academicians, writers and civil society activists of Kolkata have written to West Bengal Chief Minister Mamata Banerjee to declare certain areas of the city, which are both architecturally unique and climate-congenial, ‘heritage precincts’, and also identify green cover and biodiversity zones. Along with writer and founder of the Calcutta Architectural Legacies Amit Chaudhuri, the letter was signed by writer …