TechnologyBatteries built with bumpy components work better in the freezing cold Lithium-ion batteries often lose their charge at sub-zero temperatures, but a design incorporating bumps into one of the main components makes them work much better ¿ìè¶ÌÊÓÆµ
PhysicsChernobyl radiation spike may have just been electrical interference High radiation levels seen as Russian forces captured the Chernobyl nuclear power plant in February were put down to contaminated topsoil being disturbed, but experts now believe they could have been due to interference with wireless sensors ¿ìè¶ÌÊÓÆµ