As Japan tries to contain the crisis at the Fukashima Daiichi Nuclear Plant, the world remembers another nuclear disaster, Chernobyl. This week marks the 25th anniversary of the explosion. Ursula Sladek was a young mother in Germany in 1986, when radiation was detected in her town. Also in this episode, Dr. Elena Bodnar lived in the Chernobyl area and treated children there. The experience shaped her career, both as a physician and an inventor.