New research suggests that artificial light confuses insects The light interferes with their orientation, which is controlled by insects' instinctive dorsal light response, making them circle the light source in endless loops. (more) Why Are Bugs Attracted to Light? Written by Manjishtha Bhattacharyya Manjishtha Bhattacharyya is an editor at Encyclopaedia Britannica. She holds a PhD in zoology from Vidyasagar University, West Bengal, and has more than seven years of experience in science communication... Manjishtha Bhattacharyya Fact-checked by Britannica Editors Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Britannica Editors Last updated May 22, 2026 •History There are many theories that attempt to explain why the proverbial moth, among other insects, is drawn to a flame, particularly at night. The theory of thermal radiation suggests that insects are attracted by the heat of artificial light. On the other hand, the escape mechanism theory says that insects respond to their instinct to escape, and fly toward a light source because they mistake it for a gap or escape path in a dark...

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