The March 2006 IAEA Bulletin edition marks the 20th anniversary of the Chernobyl accident. Articles recall the event and tell the lessons learnt from it. Lessons in public information of nuclear emergency are also taken form the Three Mile Island accident. The focus is also on the safety of nuclear power plants and of radiation material and sources. An interview of IAEA Director General Mohamed ElBaradei given after he and the IAEA were announced Nobel Peace Prize laureates is also featured, with more articles on the Nobel Prize.?