7/9. Aeroplanes that can heal themselves while in flight may one day take to the skies. Researchers at the University of Bristol are now harnessing materials made from hollow fibres that can "bleed" resin when damaged to seal newly formed cracks. The breakthrough could spell good news for the aeronautical industry, which has been looking for ways to prevent cracks, caused by hail storms and other events, from worsening during flight. With
Geoff Watts , who reports on these and other cutting-edge stories from the world of science and technology. Producer Beth Eastwood