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Worldbuilding
Mark Olson's user avatar
Mark Olson's user avatar
Mark Olson's user avatar
Mark Olson
  • Member for 6 years, 5 months
  • Last seen more than a month ago
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I'm a retired chemical physicist-turned software developer and manager and a science fiction and history enthusiast living outside Boston.

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Top posts
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110
My time machine needs to know when it is
Jun 26, 2018
answer
81
What are the effects of slicing the Earth in half with a particle beam?
Jul 13, 2018
answer
69
Superheated bullets and the damage they would deal
May 15, 2018
answer
65
Why is Cryo-sleep considered harder sci-fi than FTL?
Aug 23, 2018
answer
62
Could an astronaut in a near-future space ship survive transit through our asteroid belt?
Sep 1, 2018
answer
59
Why would a fighter have a weaker shield than a capital ship?
Jan 8, 2019
answer
58
What are the safety margins for destroying a planet from space?
Apr 24, 2018
answer
45
If prey and predator switched places how would this shape the ecosystem?
Jan 8, 2020
answer
44
Tree Shape on a Tidally Locked World
Jan 5, 2020
answer
39
Could a cave-in or avalanche in low gravity be dangerous?
Apr 9, 2018
Top network posts
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294
What did Frodo and Sam eat when they crossed Mordor on foot?
122
How far did Gandalf and the Balrog drop from the bridge in Moria?
121
What's the big deal about the Nazgûl losing their horses?
103
Was Tolkien good at his day job?
89
When did the Roman Empire fall according to contemporaries?