The fireflies were certainly dancing last night. I think it is wonderful that such charming, smile-inducing critters also provide these services to scientists:

Today chemists are already applying and studying further applications of the fireflies' tools, their light-generating luciferin molecules and luciferase enzymes, to a wide range of problems. Here are a few:

Identifying tuberculosis strains, thus reducing pre-treatment time from two months to two days.
Measuring the effectiveness of various drugs in treating human tumors.
Coding genes.
Testing soft drinks, milk, drinking water and meat for bacterial contaminat ion.
When our spaceships visit other planets, determining whether life exists there.
Establishing which plant genes are associated with roles like daily timing cycles.
Detecting trace amounts of oxygen, mercury or aluminum in living tissue.
Exploring gene modification to reduce the risk of stroke.