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alf the elephants from West and Central African savannahs have vanished in the past 40 years, scientists report in PLoS One.

A recently completed aerial survey of northern Botswana by Elephants Without Borders (EWB), through the support of Botswana's Dept. of Wildlife & National Parks, indicates that wildebeest, giraffes, kudu, lechwe, ostriches, roan and tsessebe antelope and warthog species are significantly challenged. Populations of these species appear to have dropped significantly over the past 15 years, specifically in Ngamiland, which encompasses the Okavango delta.

Climate change could mean unthinkable loss for South Africa, which hosts talks on global warming that will bring government negotiators, scientists and lobbyists from around the world to the coastal city of Durban next week. Guy Midgley, the top climate change researcher at the South African National Biodiversity Institute, said evidence gleaned from decades of recording weather data, observing flora and fauna and conducting experiments makes it possible for scientists to "weave a tapestry of change."