I remember standing in the bush above this unbelievably wild river, and thinking this is as good as it gets. Exquisite birdsong, jagged peaks of the Alps beckoning like the spires of mystical cathedrals, the smell of moisture in the beech forest like an elixir. Nature in its raw, unpredictable state – at an entirely different end of the spectrum from the confines of a test tube or comfort of a biotech lab.