What organic compound causes fireflies to light up?

Correct answer: Luciferin

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What people think about it: 8 Comments
Daybonn
Daybonn
Where did the fire flys go? When I was a kid in the 1960’s there were so many. The night sky’s were full of them. Now you rarely see them. I
Laurie
Laurie
I still see a lot of fireflies. I have heard they need clean water to reproduce.
Dragon.jon
Dragon.jon
Daybonn, Ten years ago or so, I saw thousands of lightning bugs on the edge of a field and forest lighting up the early night sky. There were so many of them it looked like Fairy Dust!
Susie
Susie
My favorite part is that sometimes some of the frogs that eat them start to glow too. SO Freaking Cool 😎
TKLMSJKB♡
TKLMSJKB♡
Daybonn, same with what we call Christmas beetles. Here, I think it is solely due to urban encroachment.SAD
CptHardlock
CptHardlock
Daybonn, Exactly, when I was a kid I could literally fill a jar with them.
Maestra
Maestra
And of course Lucifer’s name means bringer of light, and lux, luz, all mean light so the etymology is obvious.
Player #2342698
Player #2342698
guessed right, unbelievable!!!