A goat that produces spider's web protein is about to revolutionise the materials industry.
Stronger and more flexible than steel, spider silk offers a lightweight alternative to carbon fibre.
Up to now it has been impossible to produce "spider fibre" on a commercial scale. Unlike silk worms, spiders are too anti-social to farm successfully.
Now a Canadian company claims to be on the verge of producing unlimited quantities of spider silk - in goat's milk.
Using techniques similar to those used
to produce Dolly the sheep, scientists at Nexia Biotechnologies in
Quebec have bred goats with spider genes. (BBC)