What distinguished Napalm B, the variant employed in Vietnam, was how easily it could be made. Simple "bathtub chemistry" was used to mix together a concoction of gasoline, benzene, and polystyrene.

But it resulted in a mixture of boiling water and sugar, known as 'prison napalm', which is often used as a weapon by prisoners. The deadly liquid sticks to the skin and intensifies burns ...

Depending on its mixture, napalm can burn for several seconds or even up to 10 minutes. Extinguishing napalm can be challenging, depending on its composition. You might try to cut off the oxygen ...