Link to article:http://www.sciencedaily.com/releases/2012/02/120214134936.htm
Wild fires cause much damage. It causes the loss of property, lives(sometimes), pollution, etc. If it becomes too big, it will spread very quickly and very hard to stop. Much money and manpower is pumped in to stop the fire, prevent it from spreading and to prevent it from starting again immediately. It is estimated to cost one billion dollars per year to suppress wild fires but the true cost exceeds that by a few billions of dollars. Lets take some true examples.
Years Annual Cost
1970s $420 million
1980s $460 million
1990s $700 million
2000s $1.4 billion
2001-2007 $3.2 billion
The costs are increasing during the time when wildfires occur normally. Now, when the number and frequency of wildfires increase, how much would it cost now?