Hazardous and huggable: The dual nature of trees

Trees are incredibly important. They keep us all breathing, regulate the temperature of our planet and can even make humans feel better. But trees also have a troublesome side. For this fascinating episode, lawyer Sarah Dodd of Tree Law Ltd, explains the the risks that foliage can bring, reveals how many trees it takes to replace an ancient oak and highlights how sustainability is not as simple as you might think...