Nature and EnvironmentExplainer: What are old-growth forests? 02:16This browser does not support the video element.Nature and Environment08/22/2019August 22, 2019The oldest trees in the world can be found in the rainforests of New Zealand, where whole areas are as yet untouched by humans. The world's forests are massive sources of fresh water and also important carbon sinks. But they're under serious threat. Copy linkAdvertisement
