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Bergmann’s Rule, named for the nineteenth-century German biologist who described it, refers to the tendency for size to increase with latitude among individuals within a species or among closely related species.
“I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.”
― Dune
― Dune
“Who controls the past controls the future. Who controls the present controls the past.”
― 1984
― 1984
Hard SF
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— last activity May 15, 2026 03:22AM
This is a discussion group for this specific subgenre in SF where the plausibility of the science counts.
Jonathan’s 2025 Year in Books
Take a look at Jonathan’s Year in Books, including some fun facts about their reading.
6,197 books
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4,950 friends
463 books
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26 friends
218 books
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14 friends
2,785 books
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81 friends
57 books
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5 friends
97 books
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139 friends
7 books
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14 friends
174 books
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11 friends
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