Let’s celebrate some progress. Ten years ago the centerpiece of Carroll Creek Linear Park was an open sewer — a smelly pool of stagnant water supporting little more than slimy green algae. This canal has been transformed. Now its splendid waterlilies alone are well worth repeated visits. And the ducks. The city put in a pump house to move and filter the water. And some dedicated people worked persistently over several years to establish the waterlilies. At least that’s my understanding of the story as a casual observer. But it would be good to have a News-Post feature about exactly how this big civic improvement was achieved. What precisely needed to be done, and who did it? Whom should we thank? What problems did they have to overcome? And what are the remaining difficulties in maintaining what is now a great civic asset?