the caterpillars spin about a kilometer of silk to build that cocoons silk fibers have been used by humans for thousands of years to produce textiles. but now the researches in boston have succeeded in giving silk a completely new form that process is unique wild white. the first ground up and dissolved in an alkaline liquid there are such as extract the silk persons it s an elaborate process but it allows them to reconstitute the viscous base substance that s the secret behind silk. cassopolis been threads from this mixture of silk protein water and the adhesive seris and. they full secrete an out of the gland on their heads. the water evaporates and the silk fibers in the adhesive combine to form the light an extremely strong thread. there is such as a trying to do the same thing to spin robust threads from liquid silk off to