Interview with Paul Crutzen by Astrid Gräslund at the meeting of Nobel Laureates in Lindau, Germany, June 2000.

Paul Crutzen talks about family background, early education and interest in natural science; his work in the Institute of Meteorology in Stockholm (4:54); his discovery (6:46); the ozone layer (15:34); the Greenhouse Effect (19:03); ozone holes (23:33); and the consequences of a 'Nuclear winter' (27:02).