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18 October 2007 - 02:00
By unknown

The two main causes of fire in the environment are lightning and human activity. On average, lightning strikes the ground 100 000 times every day - although not all of these strikes cause a fire.

The two main causes of fire in the environment are lightning and human activity. On average, lightning strikes the ground 100 000 times every day - although not all of these strikes cause a fire.

However, it is people who cause most countryside fires, and this is mostly through being careless. Throwing away a lighted match or glowing cigarette end can have catastrophic consequences, but many fires are started deliberately. In some places, a fire can start without any obvious cause. This is called spontaneous combustion, and can happen when there is a large build-up of dead and rotting vegetation, which produces enough heat to start a fire. - Violent Planet, Ticktock