This is interesting, there's a flurry of interest in Fraunhofer Lines. Umm, so you say, what are Fraunhofer Lines? Well, they're the thing that are going to tell us all whether I really am responsible for 50% of the light that you can see from space. Light from the earth, that is:

Quite seriously, economists are thinking about measuring how rich a
place is by how well they can light up the night. The richer, the more
street lights there will be, as an example. But street lights use a
very specific technology, one that uses a sodium/scandium cycle. And
scandium is used very rarely indeed other than in street lights. So if
we look at the Fraunhofer Lines in the light that we can see from
satellites in space, then we can work out how much of that light we can
see comes from street lights.

Your humble reporter is
not only the person who supplies most of the scandium for street
lights: he is also the person who suggested this avenue of research to
the economists, that we should look for the Fraunhofer Lines.

One does have to admit to a certain amount of chest beating over this: you can be sure that if the research does indeed show this then I'll tell you. Absence of information will of course be evidence that research is ongoing, not that it has failed 🙂