Kim Pil-Gi left his construction job in Seoul, South Korea, three months ago. Now he happily spends his days handling grubs: squirming, writhing, beetle larvae, each one about as thick as a grown man's thumb. He sits at a tray, sorting them by size.
"At the construction company a lot of the time I'd wake up at 6 in the morning and work all night through to the next day," he says. "That was really hard for me."