Acclaimed physicist Freeman Dyson, who pondered the origins of life, interstellar travel and many other topics, died Friday at the age of 96. Freeman Dyson was known for groundbreaking work in physics and mathematics but his curiosity ranged far beyond those fields. Dyson permanently joined the Institute for Advanced Study in 1953. From his perch there, he pursued many other topics of interest. He helped to design an inherently safe nuclear reactor. He was particularly well known for his skepticism of climate change, both as a phenomenon, and as something humans should worry about. "All the evidence we have is that we're having some effect on the climate." "It's not clear whether it's good or bad. It's not clear whether it will be a catastrophe or not."