„Steter Tropfen höhlt den Stein“. In Anlehnung an dieses Sprichwort hat Wasser innerhalb von Jahrmillionen bei der Bildung von Landschaften ganze Arbeit geleistet. Der ewige Kreislauf des Wassers ist der Grund dafür, dass sich die Landschaften unseres Planeten so grundlegend von der Kraterwüste des nächsten Nachbarn, dem Mond, unterscheiden. Die Sendung zeigt, wie Wasser und Flussläufe entstehen lässt, wie Flüsse Landschaften prägen und vom Menschen für die Agrarwirtschaft genutzt werden.
The Moon is our nearest neighbour in the Solar System. It has neither water nor atmosphere, and so its surface features, mainly craters, have changed very little over billions of years. In contrast, the Earth's landscape is always changing: worn down and smoothed out by weathering and erosion. Water is one of the most powerful forces shaping and sculpting the surface of the Earth. It creates some of our most dramatic landscapes. The seas and oceans contain 97% of the Earth's water. 2% is stored as snow and ice. The remaining 1% is on the move – some is held in the atmosphere as water vapour or rain; the rest is on the land, in lakes, in the ground, or flowing into rivers and back to the sea. In this never-ending cycle, water continually changes our landscape, sometimes slowly, sometimes vigorously. Focus: The water cycle, glaciated landscapes, river erosion: V-shaped valleys and waterfalls, meanders and oxbow lakes, flood plains [mehr]
