Fire control by Australian aboriginals

Australian aboriginals set fires to control the amount of shrubs, but only in some regions. In some other regions, they almost never set any fires.

Controlling large fires by setting small ones worked pretty well, but one new complicating factor is that nowadays there are is a scattering of man-made things that must not be burned — such as buildings and fields of crops.

how-i-fought-to-graduate-without-using-non-free-software.html gives more ideas, from a student who resisted very cleverly. </li>