Spacecraft skin 'heals' itself

New Scientist SPACE: "The researchers have taken inspiration from human skin, which heals a cut by exposing blood to air, which congeals to forms a protective scab. 'The analogy is the vascular system of the human body,' Bond told New Scientist. 'The system needs to be completely autonomous.'

"...The glass filaments are designed to crack easily when the overall composite material is damaged, which causes both chemicals to leak out and rapidly plug the resulting crack or hole."