In NH it goes something like this. In 1870 NH was 80% CLEARED of forest for farming, even the white mountains. 100 years later it was just the opposite 80% forested. All the smart farmers moved to Iowa, Indiana, etc.
In the last thirty plus years the amount of trees in the US has increased. The problem out in the western US there is not enough timber being cut on state and federal lands. This lack of clearing dead and dying timer has contributed to the major forest fires we are seeing today in CA, WA, OR, MT, CO.
What also is not being reported, because of the policy's "No Logging of any kind," i.e., down timber way of storms / lighting strikes etc, {adding vast amounts of fuel for a fire} after the {Forrest} fire inspections reveal lots of melted glass. You may be saying either this guy {that would be me} is nut's, or I've never heard of such a thing. Simple answer, all / mostly what is needed to make glass is SAND, the fire(s) are burning MUCH HOTTER, because of the available natural fuel(s) i.e., down timber.