This week's experiment comes from Burning Questions, my program on the science of fire. When teaching about fire, educators frequently talk about the fire triangle to teach about how things burn. Just as a triangle has to have three sides to be a triangle, you need three things to have a fire: Fuel, heat, and oxygen. Recently, fire educators have started teaching about the fire diamond instead of the fire triangle, because sometimes having fuel, heat and oxygen is not enough to get a fire. To see this, you will need:

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