Colorful Salty Circuits Art inspired play & science for kids wrapped up June with a final circuit activity. This week we made colorful circuits using a simple household ingredient - salt! Materials: LEDs 1 Battery Pack Card stock Paper Paper clips Water color Dropper / Pipette Glue Markers Kids drew the art that they wanted to light up - heart, butterfly etc split on to two pieces of paper making sure that the art extended to the bottom and top right edge of one paper and bottom and top left edg

The electrolytic copper foil is a key material used in high-end lithium batteries and electronic circuits. Xinhua visits a company in east China to explore how copper is transformed into sheets as delicate as spider silk. | China Xinhua News