A book by Isaac Asimov
The Door into Summer is a science fiction novel by Robert A. Heinlein, originally serialized in The Magazine of Fantasy & Science Fiction (October, November, December 1956, with covers and interior illustrations by Frank Kelly Freas) and published … see full wiki

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Sorry, I'm stuck on preachy. LOL I think grade school kids should be given a lot of science fiction because it can get mind expanding ideas into their heads when their mids are still plastic enough to be expanded. Who cares what 40+ year old readers read? It is just a way for the publishing companies to make money selling whatever fits on the band wagon. Like lots of Star Wars junk.
http://www.youtube.com/watch?v=9WY1dM33uVU
What do you mean by eventually get there? I thought associating Door into Summer with Global Warming was kind of cute.
I'm an old fogy. What do you expect? LOL
I'm working on Dan Simmon's Hyperion now. It's not stone age sci-fi. I have always avoided it but I encounter talk of it so much I am finally breaking down and checking it out.
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