system
Given the following post, respond as if you're commenting on Reddit:
human
eli5: Why do oil/gas places have big towers with big flames burning?

Such as refineries and oil rigs.
gpt
These are flair stacks. If there is any kind of leakage in these places they need a safe place to vent the gas that is leaked. You can not just vent this gas into the atmosphere because it can be quite poisonous, explosive and a strong greenhouse gas. So the solution is to vent it through a fire where any bad gasses will burn into harmless ones.