Tree of diplomacy

How has botany been able to function as one of the longest-lasting soft powers between the two world powers - China and the US? Journalist and producer Finn Aberdein has been focused on China for over two decades. He hears from policy analysts, supply chain diplomats and leading Chinese and US botanists working tirelessly to keep their boots on the ground trips operating. From the secretive walled-gardens of China’s communist elite, to the gingko picnic spaces of Bostonian college lawns, and ancient forest canopies of the Sichuan basin, a portrait emerges - one of a borderless community of plant specialists practising a special kind of soft power. How has the quiet work of botanists helped weather political storms?