Kim Sung-hwa Author

Kim Sung-hwa and Kwon Soo-jin studied biology and molecular biology at Pusan National University, South Korea, and have a passion for teaching others about how good bacteria help our bodies and keep us healthy.

Kim Ryung-eon studied painting at university, and has been working as an illustrator for children's picture books since 2003. 

After graduating from the Department of Microbiology at Seoul National University, Chun Jong-sik received a doctorate in microbiology from Newcastle University Medical School in England. He is now teaching students in the life science department of Seoul National University.