Since water is one of the big issues in the world nowadays, it is logical to choose it as a topic of the World's fair: "Water and sustainable development" is the motto of the Expo 2008 taking place in Zaragoza from June until September - and you can really learn everything here about water desalination, water recycling, water supply and water energy in different areas all over the world.Visiting the German Pavilion on the German Nation Day at the Expo, we really dived into an amazing waterworld! Watch our interview with Frank Bumann!