I note with amusement that the physicist William Happer *64 is described as being known for his "climate-change skepticism." It is important to draw a distinction between a climate-change skeptic and a climate-change denier. A skeptic is a person who has dispassionately examined the relevant studies and found enough faults in them to justify his skepticism. If his "skepticism" is based on personal bias and on his ability to find those few studies which conform to his bias, he is not really a skeptic, but a denier.  Dr. Happer should feel quite at home in President Trump’s circle. 

Stephen E. Silver ’58
Santa Fe, N.M.