The London startup uses AI-engineered enzymes to break nylon 6,6 waste, from leggings to airbags to carpets, back into the monomers it was made from, recovering more than 90% and removing the need for virgin petroleum feedstock. Total funding now exceeds $50M. Nylon 6,6 is one of the most useful materials humanity has ever made. DuPont scientists first synthesised it in the 1930s and it has been i...