An aerial view of the flooded outskirts of Trinidad, Beni, some 400 km (250 miles) northeast of La Paz, February 22, 2007. At least 35 people have been killed, thousands have lost their homes, and crops and roads have been destroyed in the most devastating floods in 25 years in Bolivia. According to official reports some 350,000 Bolivians are suffering the hardships of the extreme weather triggered by El Nino, a once-a-year weather phenomenon believed to be caused by global warning. The extreme weather has affected most of the country, but especially the Amazon region of Beni in northern Bolivia, and the eastern province of Santa Cruz, the country's agricultural heartland.