TechnologyTiny battery made from silk hydrogel can run a mouse pacemaker A lithium-ion battery made from three droplets of hydrogel is the smallest soft battery of its kind – and it could be used in biocompatible and biodegradable implants News
MathematicsThe mathematical theory that made the internet possible Information theory tells us the limits of what can and cannot be communicated – and without it, the digital revolution could never have happened News