Sexy Scary Wings

Can colors be scary and sexy at the same time? This is Sandra Tsing Loh, with the Loh Down on Science, saying: Yes! At least for butterflies. Consider the heliconius erato butterfly of Central America. It sports a red band on its black forewing and a yellow stripe on its

Playing Defense

Have no fear! Nanoscavengers are here! This is Sandra Tsing Loh with the Loh Down on Science. You won’t find nanoscavengers in the latest superhero comic, but they could protect you against dangerous nerve agents. Nerve agents are a deadly class of chemicals commonly used as weapons in wartorn areas.