Bell Telephone produced a series of science programs in the late 1950s (for television, I think) that were later shown in classrooms around the country like mine (circa 1979) in the Shawnee Mission district. The star of the series was Dr. Frank Baxter, aka Dr. Research. Here he is, with a guy who looks a lot like the Night Stalker Darren McGavin, talking about global warming. This is one example why the fims endured as long as they did. The makers had their science shite together.