A sea of solar panels is rapidly engulfing one of the world’s largest salt deserts. By 2029, nearly 60 million panels will cover 280 square miles of India’s Rann of Kutch, extending right up to the border with Pakistan. The Khavda solar park is set to be the world’s largest and most powerful supplier of electricity from the sun, with a generating capacity of 30 gigawatts — 30 times the size of a typical coal or nuclear power station and enough t…