CNN.com - Plant species in peril, report warns
CNN reports: "Over one-fifth of the world's plant species are threatened with extinction according to a new study compiled by the UK's Royal Botanic Gardens at Kew, London [...] The report says that human activities (81 percent) far outweigh natural threats (19 percent) to plant biodiversity and are being fueled by agriculture, logging, plantations and livestock. The overwhelming amount of this plant degradation is happening in tropical rainforests."