There's a fantastic article over at New Scientist about the science that shaped Ray Bradbury's development as a person and as a writer, including his early fascination with theories about life on Mars, and his obsession with psychology.
Written by Bradbury's biographer (and co-founder of the Center for Ray Bradbury Studies) Jonathan R. Eller, the essay is as much a look at the history of the past century as it is a look at Bradbury himself. Bradbury's ideas were changed by the development of the Atomic Age and the Space Age, and thus he evangelized for human colonization of space as well as warning of planetary destruction. Bradbury has always loved science, but refuses to learn to drive a car and tries to avoid air travel.
The whole thing is well worth a read. [New Scientist]