Burning sawdust as a reference to evaluate the flammability of pollen relative to something known to be flammable. This was in response to an xkcd post about what would happen if all the pollen on Earth was ignited: https://what-if.xkcd.com/97/
The video of the pollen burning is here: https://www.youtube.com/watch?v=qeMLN36JTyQ

I updated the title as people seemed to think this video was meant to look cool rather than provide a relatively boring reference to answer the question of how flammable pollen is. Apologies to those who were disappointed.