Matthias Platzeck (born 29 December 1953) is a German politician. He was Minister President of Brandenburg from 2002 to 2013 and party chairman of the SPD from November 2005 to April 2006. On 29 July 2013 Platzeck announced his resignation from his office in August for health reasons. Early life and education Platzeck was born in Potsdam, the son of a physician and a medical-technical assistant. After attending Polytechnic Secondary School in Potsdam from 1960 to 1966, he went through Extended Secondary School in Kleinmachnow. Following his Abitur in 1972 and military service he studied biomedical cybernetics at the Technische Universität Ilmenau from 1974 onward. After his diploma in 1979, Platzeck worked at the institute for hygiene in Karl-Marx-Stadt (today Chemnitz) in 1979–1980 and the general hospital in Bad Freienwalde from 1980 to 1982. From 1982 to 1990 he was head of the department for environmental hygiene at the agency for hygiene in Potsdam. Political career Platzeck co-founded ARGUS, a Potsdam environmental organization, with and at the initiative of Carola Stabe in April 1988. In April 1989, he joined the Liberal Democratic Party of Germany but left it shortly thereafter. He represented ARGUS at the founding of the Grüne Liga association of local environmental organizations in East Germany in November 1989. During the political "Wende" of 1989–1990 that led to German Reunification he was their speaker at the East German Round Table talks. From February to April 1990 he represented the oppositional radical Green Party as Minister without Portfolio in the last non-elected but legitimate government of the GDR. Platzeck was elected member of the Volkskammer in 1990 for the Green Party and was parliamentary secretary of the joined faction of Greens and Bündnis 90 (Alliance 90). After German reunification, he was one of 144 members of the Volkskammer co-opted to the Bundestag. He did not run for a full term in the 1990 German federal election. In October 1990 Platzeck became a member of the Landtag of Brandenburg for Bündnis 90 (Alliance 90). He was Minister for the Environment in a coalition government with the SPD and FDP from 1990 to 1994, when the coalition broke up. Rejecting the merger of his party with the West German Green Party he did not join the new party Bündnis 90/Die Grünen in 1993. Instead, he became a member of the SPD on 6 June 1995. After the break of the Brandenburg