PhysicsStephen Hawking: Tributes pour in as physicist dies aged 76 World-famous theoretical physicist Stephen Hawking died on Wednesday morning, and tributes are flowing in ¿ìè¶ÌÊÓÆµ
PhysicsCars that run on supercapacitors could be charged in minutes New material could lead to supercapacitors that hold more energy than lithium batteries and allow electric vehicles or smart phones to be charged in minutes ¿ìè¶ÌÊÓÆµ