Delegates from around the world are meeting in Colombia in what is expected to be the biggest U.N. biodiversity conference in history. Delegates from around the world are meeting in Colombia in what is expected to be the biggest U.N. biodiversity conference in history. Biodiversity, Environment, United Nations Convention on Biological Diversity, Cali (Colombia), Conservation of Resources, Global Warming, Endangered and Extinct Species, Agriculture and Farming, Fishing, Commercial, International Relations, Indigenous People, Amazon Jungle NYT > Science