30 / 35
File: In this photo taken Tuesday, July 19, 2011, elephant walk through the Kruger National Park feeding of trees. Climate change could mean an unthinkable loss of wild life in 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 (AP Photo/Denis Farrell)

Global warming

Global warming is leading to such severe storms, droughts and heat waves that nations should prepare for an unprecedented onslaught of deadly and costly weather disasters, an international panel of climate scientists said in a report issued earlier this year.