This electroactive polymer hydrogel “learned” to play Pong. Credit: Cell Reports Physical Science/Strong et al. “Our research shows that even very simple materials can exhibit complex, adaptive ...

I used to teach high school science in Oklahoma, and one day I brought in a stalk from a cotton plant with bolls of cotton still attached. Students asked me why I glued cotton balls to a stick. My ...

Learn how to make a simple lemon battery and use it as an emergency phone charger in this hands-on science experiment. Watch step-by-step as we cut lemons, prepare copper and aluminum electrodes, and ...