The Smiling Sun logo was designed in 1975 by Danish activist Anne Lund who was part of the Danish organization OOA (/ Organization for Information on Nuclear Power). By posing the question: “Nuclear Power?” and providing a polite answer, “No Thanks”, the logo was meant to express friendly dissent and - by questioning nuclear power - to stimulate dialogue. In 2011, after the Fukushima disaster, a new version was released for renewable energy, with the statement "Renewable Energy", "Yes Please" (Danish: "Vedvarende Energi? Ja tak!") on a green background with a yellow sun.