蜜芽传媒

If an ecosystem or landscape changes, it will usually look quite different over time. However, Dr Bernie Krause argues that you can hear this change as well- and that these sounds should be preserved. He has been recording the sounds of remote habitats and rare animal species since 1968, and has published his findings in a new book 'Voices Of The Wild'.

(Photo: The Sierra Nevada mountains, one of the areas recorded by Dr Krause. Credit: 蜜芽传媒)