>>6509851Shows up more commonly titled Under Pressure. It also shows up as The Dragon in the Sea.
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https://en.wikipedia.org/wiki/The_Dragon_in_the_SeaIf you're a Frank Herbert fan at all, this is an essential book. The politics and the envisioned tech is a bit dated. However, not horribly so. If you can place yourself in 1956 or the 1960s, you won't notice many holes. Even by 2000, it still held up reasonably well. Frank Herbert was able to spin a story that well.
That's kind of beside the point. Under Pressure is more of a "semi-apocalyptic" scenario, occurring after "limited" nuke strikes worldwide. And, you're not reading this for the eyecandy of glitzy post apocalyptic techbabblespeak and gimmicks. You're reading this because it will psychologically grab your brain and suck you in. Hard. This is some premium Frank Herbert, a real overlooked gem of his and an essential read.
Honorable mention from this era: The Green Brain (1966). Horrible title (by today's standards), but solid book:
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https://en.wikipedia.org/wiki/The_Green_BrainIf humankind was ecologically destroying the inhabitable world, and insects developed a hive mind to fight back ... It never really becomes post apocalyptic so much as it describes the "apocalypse" that takes place just as the book ends. Not one of his top works, but still very worthy. He wrote a number of stories that played with the theme of insect-like hive mind (Hellstrom's Hive is another, not an apocalyptic theme, though).
Not really his best work but still detailed and intense: The White Plague. A genetically engineered plague is released by a genius driven mad with grief. Imperfect, it mutates & wipes out about 99% of the female population of the planet. Just try to imagine the repercussions if that actually happened.
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https://en.wikipedia.org/wiki/The_White_PlagueIt's worth trying to read everything by Frank Herbert you can find.