A century of every fire has made some forests more dangerous, not less.
Many ecosystems evolved with frequent, low-intensity fire that cleared the .
Removing that process allows to accumulate for decades.
When finally comes, the fire is hot enough to kill mature trees that once survived.
reintroduces the small fire deliberately, in cool, damp conditions.
It is well understood, and the constraint is neither science nor cost.
A planned burn that escapes destroys a career, while a wildfire destroys nobody's.
The therefore runs against the practice.
Smoke regulation adds a second obstacle, since a controlled burn produces smoke on a chosen day.
Nobody is blamed for the smoke of a wildfire.
fire management has been rediscovered in Australia and North America for precisely this reason.
It uses many small, seasonal burns rather than a few large operations.
Where such programmes run, the area burned by uncontrolled fire has fallen measurably.