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 News
PhysicsUltrasonic micro-explosions can harvest gold from old SIM cards We waste $22 billion in gold from electronics that are tossed out instead of recycled. A new technique uses ultrasound to harvest that precious metal from SIM cards News