After making magazines and books, O Yun-jeong went back to school to study how to make more interesting science books. O studied architectural engineering, environmental education, and science education. She earned a doctorate, and currently studies engineering education. She continues trying to see the world through the window of humanities and social science and with the lens of science. She currently works at Sung Kyun Kwan University. Her works include Discover Science Hidden in Every Corner of Your Home, Making an Invincible Armor, A Weather Sprite Has Appeared, No More Waste of Energy, and Science, Please Take Care of Adolescence.