Is Oxygen an explosive gas

[Rampage_Rick]

Wood is a gaseous fuel?

Yes, further to what GoldDigger said you can take the unburned gasses emitted by the wood and use it to run an engine:

 

[K8MHZ]

Yes, further to what GoldDigger said you can take the unburned gasses emitted by the wood and use it to run an engine:

I didn't watch the video but the pic looks like a 'wood gasifier' which makes methane via destructive distillation.