PhysicsBent bird feathers repair themselves when soaked in water Elastic fibres inside a feather can spring back to their original shape when soaked in water, helping it straighten even after being bent nearly in half 51¶¯Âþ
PhysicsSuper-tough diamonds have been made bendy and springy Diamonds may be tough, but they can also be surprisingly flexible. A team of researchers grew diamond nanoneedles that bent and then sprang back upright 51¶¯Âþ