This meeting of an environmentalist and a coal man is surprisingly uncontentious--but very informative, as each finds ways of making the subject vivid to the layman. Mr. Quenon: "Many of the things that we know today we know as a result of the advances of science--how many parts per million there are in this piece of atmosphere and that piece of water.... I defy you to travel anywhere except a remote Pacific island to find an atmosphere that's as clean as ours is." ... Mr. Pope: "If I had a business behind your house, and as part of this business I made big barrels of sulphuric acid, you might benefit from my business; I might be producing electricity and you might be burning my electricity. I don't think you'd find it acceptable for me to go and dump my barrels of sulphuric acid in your back yard, although this might be the low-cost solution."