Washington (AFP) – After 17 years underground, swarms of cicadas are emerging across the eastern United States — and for one Washington chef, the rare bug invasion was his cue for a cookout, with a side of food ethics. Bun Lai, an advocate for the sustainable food movement, invited locals for an insect hunt in a city park followed by a taste of his fried cicada sushi. “In a world where we’re suffering from the biggest pandemic in history — which is not Covid, but diet-related diseases — we’re going to have to take a revolutionary approach to how we’re used to eating,” he said. Over the week…