ClimateWire: A new kind of billboard is going up in the Indian city Ahmedabad these days. Amid the larger-than-life pictures of politicians, film stars and consumer goods are signs that proclaim "Heat Alert," instruct you to "Drink More Water" and counsel you to "Save Yourself From Heat," both in English and the local language, Gujarati.
The billboards are part of a heat action plan that was launched earlier this month, the first plan of its kind in a South Asian city. Ahmedabad, with its 7.2 million residents,...