For several weeks now, the Indian capital, Delhi, has been battling a severe heatwave, with temperatures routinely rising above 40C. The real feel, the weather apps helpfully tell us, is always a few degrees higher. But how hot do you feel when you hit the streets? On Tuesday, the Indian Meteorological Department (IMD) recorded the maximum day temperature at 43.5C in the capital. But we spent the day out on the city streets with a thermal camera deployed by Greenpeace India which recorded