Caused by careless smokers and lightening strikes. Most costly wild fire in canada history is the okanagan mountain fire. Difference in this fire and the many others was the number people and the amount of property in the paths of the fires. Another fire in 2009 in bc, lessons learned. Indonesian fires of 1997-1998 islands of the borneo and sumatra fires made worse from drought caused by el nino event. Problems such as, respiratory, eye and skin ailments. Schools and businesses closed low visibility caused plane crash in northern sumatra. Co2 released from fires (consumption of fossil fuels) Causes of fires to make them out of control: drought caused by el nino caused the set fires to spark much larger wildfires not being able to be contained. Yellowstone fires of 1988 fires benefit ecosystems so scientists believe fires should not be suppressed. Any human caused fire would be extinguished immediately.