[30 November 2007] GGOS Chairs represented IAG at the Ministerial Summit on Earth Observation: The chair and the two vice chairs of GGOS represented IAG at the Fourth Ministerial Summit on Earth Observation, which took place on November 30, 2007, in Cape Town, South Africa (see the chairs ...). In a statement delivered by the Chair of GGOS, Markus Rothacher, GGOS emphasized the importance of an operational core for the sea level, water cycle, and geohazards components of the geodetic observing system (read the statement ...). GGOS was also represented in the Exhibition of the Fourth Plenary meeting of the Group on Earth Observation (GEO) with a booth featuring among others a CHAMP model and a visualization of the changing Earth gravity field (see the booth ...).