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Professor Iain Stewart reveals how Scotland's unique landscape was shaped. Here, he uncovers the devastating impact of mankind and the climate on the nation's trees.

Professor Iain Stewart reveals how Scotland's unique landscape was shaped. Here, he discovers how man made the proverbially beautiful Highlands.

Professor Iain Stewart reveals how Scotland's unique landscape was shaped, and how public emotion has led to inconsistent preservation in Scotland's seas.

Professor Iain Stewart reveals how Scotland's unique landscape was shaped. Here, the story of how Scotland's waters became some of the most managed on earth.

Documentary series. Professor Iain Stewart looks at how Scotland is on the verge of a revolution - the transformation of a carbon economy to a green one.