In this photo taken Sunday, Sept. 13, 2009 released by Greenpeace, a Greenpeace activist leads the first leg of an elephant caravan on a road near Khao Yai National Park in Nakhon Ratchasima province, northeastern Thailand. The elephant caravan, will pass by Thailand?s central plains, along climate change-impacted areas, to call on world leaders to take decisive action on global warming. The caravan's 15-day 200 kilometer (124 miles) journey will arrive on the outskirts of Bangkok on Sept. 28 in time for a United Nations Framework Convention for Climate Change (UNFCC) meeting. (AP Photo/Greenpeace, Sataporn Thongma)
