sentence: Some people say they are methane gas that comes from ground and burns in the air.
sentences_before: Different cultures have understood ghost lights differently. People believed that they are dragons, spirits or ghosts. Today some believe they are spaceships. There are many theories about what ghost lights are.
sentences_after: Others say they are electric things like ball lightning. The fact that some animals and fungus glows may explain some ghost lights.
concept_name: people
headings: Ghost light
categories: Folklore