This year's meeting of the American Thoracic Society (ATS) was exciting from several vantage points, including the fact that it was the 100th anniversary of the ATS, a striking achievement for this venerable organization. The ATS meeting is the largest gathering of pulmonary and critical care specialists in the world. For those of us involved with or closely following developments in pulmonary hypertension (PH), the meeting was also notable because of the extensive focus devoted to PH at this meeting, in scientific sessions, debates, abstracts, and original research. As a moderator for some of these sessions, I was