Silkworms have been genetically engineered to spin spider silk

Scientists from University of Wyoming, who published their research in the PNAS journal, say their ultimate goal is to produce silk from worms that has the toughness of spider silk. Spider silk, weight-for-weight, is stronger than steel. The team say the silkworm silk has a whole range of biomedical applications, including uses for bulletproof vests, sports gear and airbags for vehicles.