Here is a great chance to participate in a microbiology of the built environment citizen science project on gutters.
“Examining this water…I found floating therein divers earthy particles, and some green streaks, spirally wound serpent-wise…and I judge that some of these little creatures were above a thousand times smaller than the smallest ones I have ever yet seen, upon the rind of cheese, in wheaten flour, mould, and the like.”Antonie van LeeuwenhoekAs a rule
If you happen to be in the Raleigh area, you should sign up.
And if you are not in the Raleigh area but are driving through there, they state:
As of right now we are focused on gutters either in Raleigh, North Carolina and surrounds. Though if you happen to be driving through, we’d never turn down a sample of gutter muck.
I recommend they call this project “Gutter Check”.