Yesterday evening I saw the most perfect rainbow -- ever. It was lightly raining where we were but the sky was clearing in the west as the sun was setting making the conditions just right. There were literally a dozen adults standing in a parking lot where we were -- all of us staring at the sky. We all agreed that a lifetime could go by without seeing another as perfect as this one. Not only were the colors (rembember ROY G BIV) very clear the entire thing was visible from horizon to horizon. I didn't have a camera myself but one of my students (thanks Meghan!) sent me this pic. Alas it doesn't come close to doing it justice.