Biotechnology: spider silk, a very powerful fiber

Spider silk, flexible, light, recyclable and with a resistance superior to that of steel, has long aroused the envy of the American army, the latter wishing to use it to manufacture bulletproof vests or surgical threads. But how to produce silk in large quantities when these predators devour each other to protect their territory? Incredible as it may seem, scientists have found the answer … in the udders of goats!