On a farm in Wyoming, USA, goats are being milked for their spider webs.

And if that sounds bizarre, molecular biologist Randy Lewis claims that within two years, spider silk milked from goats could replace your body's tired or strained tendons and ligaments - maybe even bones.

Professor Lewis and his team at the University of Wyoming have successfully implanted the silk-making genes from a golden orb spider into a herd of goats and are now, finally, producing one of nature's strongest products in useable quantities.