Deng's team turned to an unconventional solution — crayfish shells. China produces a large amount of shrimp and crayfish shells each year, with most going to waste. By treating crayfish shells ...

Take crayfish, for example. People rip their shells, scoop out their yellow butter, and then boil them alive in spicy sauces. In 2018, a man in China was boiling some crayfish alive. Destined for ...