Take a look at this site: http://gslc.genetics.utah.edu/basic/firefly/index.html BjornP "Mr. T" <lumina4ever at yahoo.com> skrev i melding news:e8b2b30d.0201290413.157ca5a9 at posting.google.com... > Hi group, > > I just want some information about the chemical reaction in the fireflies??? > > where do these lights come from ???