Biography
– Born in Bremen in 1954
– University Diploma in Social Economics, Journalist
– since 2009 Chairman of Bündnis 90 / Die Grünen in the German Bundestag (Federal Parliament)
– 2005-2009 Vicechairman of Bündnis90 / Die Grünen in the German Bundestag, in charge of Foreign, Security and European Policy
– 1998 - 2005 Federal Minister for the Environment, Nature Conservation and Nuclear Safety
– since 1998 Member of the German Bundestag
– 1994 – 1998 Spokesman for the National Executive Committee of Bündnis 90/ Die Grünen
– 1990 – 1994 Minister for Federal and European Affairs in the Regional State of Lower Saxony; member of the German Bundesrat (Federal Council for the Representation of Regional States in Germany)
– 1985 – 1990 Member of the Regional State Parliament of Lower Saxony; temporarily Chairman of the Greens Parliamentary Group
– 1984 – 1985 Press Spokesman for the Greens Parliamentary Group in the Regional State Parliament of Lower Saxony
– 1982 – 1984 Managing Director of the Alternativen-Grünen-Initiativen-Liste (AGIL), Göttingen, City Council