Agence France-Presse: ROME: Half of the world's forest species are at risk from climate change and farming, the United Nations warned on Tuesday, as it called for "urgent action" to manage them better. In its first global study of forest genetic resources, the UN's Food and Agricultural Organisation (FAO) said woodland was shrinking fastest in Brazil, Indonesia and Nigeria. "Forests provide food, goods and services, which are essential to the survival and well-being of all humanity," the FAO's forestry director Eduardo...