system
Given the following post, respond as if you're commenting on Reddit:
human
How do forest fires start?

Edit: how does lightening start forest fires?
gpt
A bolt of lightning can have a temperature of 5 times that of the sun (50k F vs 10k F). That is hot enough to ignite many (most) substances, especially in situations where the fuel is readily available, in the right conditions (super dry) and collected together (like dead brush.)

You can start a fire with a tiny electric spark on your grill, for instance. A gas engine uses sparks to ignite the gasoline. Now ramp that up to the massive energy involved in lightning, and its not hard to see how to can spark up a fire. I'd say that *most* fire on Earth is electrically started.