Imagine a world where humans and technology can live in harmony with nature. REPERCUSSIONS invites us to discover World Exposition 2005 Aichi Japan and the solutions humanity has dreamed up to face environmental challenges. On the Expo site, great efforts were made towards a zero waste objective. Clean, renewable energies and ecological transport were implemented on a broad scale. This film allows us to consider an ecologically respectful way of life as more than something to dream about, but as something truly achievable.