(BBC) US researchers have created silkworms that are genetically modified to spin much stronger silk.
Writing in the PNAS journal, scientists from the University of Wyoming say that their eventual aim is to produce silk from worms that has the toughness of spider silk.
In weight-for-weight terms, spider silk is stronger than steel.
Comic book hero Spider-Man generated spider silk to snare bad guys and swing among the city’s skyscrapers.
Researchers have been trying to reproduce such silk for decades.
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