| in Did You Know Facts
When luciferase was first discovered, fireflies were the only source of the chemical.
![luciferase](https://assets.shortpedia.com/uploads/2022/10/11/1665480927.webp?tr=w-1200,h-600,cm-pad_resize,bg-F3F3F3)
When luciferase was first discovered, fireflies were the only source of the chemical. Even though synthetic luciferase is now readily available, some businesses continue to collect fireflies, which may be a factor in their decline.