Maira Kalman’s latest installment of “And the Pursuit of Happiness,” a New York Times blog, is a reminder that a “green” city is a beautiful city. In this installment she considers the importance of public engagement and the people who help keep New York clean -- from the Commissioner of Sanitation to the mayor, his staff, and the woman watering the garden outside the Brooklyn sewage plant. Offering a fresh perspective on sustainability, we see how a sewage plant can be a “revelation” when lit up to resemble a scene out of the Arabian Nights.