Scientific Speculation - Posts tagged alternate-history

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Cruelty Free Vampirism [closed]

6 answers · last activity 2 months ago by HDE 226868

biology society alternate-history vampires science-fiction

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Could Sharks Survive a Longer PETM?

1 answer · last activity 3 months ago by JohnWDailey

science-based adaptability time earth alternate-history history prehistoric-times alternate-earth

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How would the Politburo respond to Project A119?

3 answers · last activity 3 months ago by Jem

space alternate-history history nuclear

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Would a Longer PETM Save the Creodonts and the Mesonychians?

3 answers · last activity 3 months ago by JohnWDailey

evolution adaptability earth alternate-history history mammals alternate-earth

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How can I prevent the invention of skyscrapers?

27 answers · last activity 4 months ago by subdermatoglyphic

society science-based cities alternate-history history infrastructure

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Could Meridiungulates Colonize The World Before the Opening of Panama?

1 answer · last activity 4 months ago by JohnWDailey

evolution science-based alternate-history history mammals

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How CAN a Wyvern be a Scansoriopterygid Dinosaur?

1 answer · last activity 5 months ago by JohnWDailey

science-based adaptability dragons alternate-history history dinosaurs

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How Different Would the Outcome of the Fall of the Dinosaur Empire Be if Chicxulub Hit at a Different Season?

1 answer · last activity 5 months ago by JohnWDailey

science-based time alternate-history history prehistoric-times extinction

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How do I stop Megalodon from going extinct?

3 answers · last activity 5 months ago by icewar1908

environment science-based alternate-history history ecology extinction

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Would human civilization develop at a slower pace if Earth was 5.8x larger?

11 answers · last activity 5 months ago by JordanTheCynic

earth alternate-history history alternate-reality alternate-earth

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Could a Greater Relative Abundance of Tin Extend a Bronze Age?

1 answer · last activity 6 months ago by NixonCranium

reality-check geology alternate-history history materials bronze-age

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Earliest viable modern battery

4 answers · last activity 6 months ago by Ucinorn

science-based technology technological-development alternate-history history

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Fantasy and the germ theory

6 answers · last activity 6 months ago by Austin Trigloff

biology society alternate-history medicine history science-in-society

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How do I preserve the Megafauna in my world?

4 answers · last activity 6 months ago by icewar1908

biology reality-check alternate-history history

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Would common people in central Europe in the 15th century notice that the whole Asia disappeared?

19 answers · last activity 6 months ago by TGar

earth-like geography earth alternate-history history

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Would it be possible for neanderthals to not go extinct, and perhaps build their own nation?

3 answers · last activity 7 months ago by bigboi

reality-check science-based humans alternate-history history

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What did the night sky look like 63 million years ago?

3 answers · last activity 7 months ago by fluffy

astronomy orbital-mechanics natural-disasters alternate-history history

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What would Europe look like if Chernobyl exploded?

4 answers · last activity 7 months ago by Marcello Fabrizio

science-based alternate-history history

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what essential material or ingredients in modern gunpowder that if changed to be expensive or rare, can ruin the evolution of advance/modern gun?

1 answer · last activity 9 months ago by Li Jun

science-based alternate-history history materials chemistry alternate-reality

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How Could a Scientist Intentionally Discover Penicillin

4 answers · last activity 9 months ago by GentlemanS

science-based alternate-history history

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Can agriculture and megafauna coexist?

2 answers · last activity 9 months ago by M Arif Rahman Winandar

culture fauna alternate-history agriculture history

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How would a lack of smokeless propellant affect WW1?

3 answers · last activity 9 months ago by Catgut

science-based alternate-history history fire firearms

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If humans evolved on Mars instead of Earth, how quickly would we have detected life on Earth?

2 answers · last activity 10 months ago by Bridgeburners

astronomy planets alternate-history history life

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Will the Dinosaur Empire Still Stand Strong If Chicxulub Hit Earth at the End of the Jurassic?

2 answers · last activity 10 months ago by JohnWDailey

science-based adaptability earth alternate-history history dinosaurs alternate-earth

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What are the most important factors in determining how fast technology progresses?

12 answers · last activity 11 months ago by Slarty

society science-based technology alternate-history history

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Would evolution happen the same exact way if Earth restarted?

17 answers · last activity 11 months ago by Braeden

biology evolution earth alternate-history history

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Would a steam powered plane be able to cross the Atlantic ocean?

15 answers · last activity 11 months ago by Slarty

reality-check science-based technology flight alternate-history light history

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Maintaining a Moon Suit

3 answers · last activity 12 months ago by o.m.

space reality-check alternate-history history

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Preserving the mammoth steppe

3 answers · last activity about 1 year ago by SealBoi

environment climate geography alternate-history history climate-change

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Could Bamboos Evolve Into Trees In the Past?

4 answers · last activity about 1 year ago by JohnWDailey

environment evolution flora alternate-history history

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Could a split cycle intercooled flamelicker have been a viable power source?

1 answer · last activity about 1 year ago by tobe

reality-check technology alternate-history history engineering

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Could Xenarthrans Be Ferried Outside South America?

2 answers · last activity about 1 year ago by JohnWDailey

reality-check evolution currents alternate-history history mammals

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What is the earliest time a pulsejet could be built?

5 answers · last activity over 1 year ago by Eth

science-based alternate-history history flying-machines

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Minimum tech level to invent core memory

1 answer · last activity over 1 year ago by rwallace

science-based computers technological-development alternate-history history

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Anal Retentiveness in a tribal nomadic society - why would it be advantageous?

4 answers · last activity over 1 year ago by chasly from UK

travel biology alternate-history history social-norms

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Aliens englobed the Solar System: will we notice?

8 answers · last activity over 1 year ago by BMF For Monica

reality-check science-based alternate-history history

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In the late 1940's to early 1950's what technology was available that could melt a LOT of ice?

12 answers · last activity over 1 year ago by Niobium_Sage

environment reality-check science-based technology alternate-history history

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Alternate aircraft configurations - would any of them be valid substitutes for conventional tailplanes?

2 answers · last activity over 1 year ago by Thesaurus Rex

science-based technology flight alternate-history light history aircraft air

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Can-and-String Telecommunications Network - Repeaters and Amplifiers

5 answers · last activity over 1 year ago by chasly from UK

science-based steampunk alternate-history history

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What kind of engine could the 14-15th century world create?

1 answer · last activity over 1 year ago by Eric clifford

technology alternate-history history engineering pre-industrial

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Is a Selective Breeding Program to Create Enhanced Humans Plausible?

7 answers · last activity over 1 year ago by Obelisk

biology reality-check science-based alternate-history history eugenics

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Counteracting Perverse Incentive effects in 1902 Hanoi rat population

1 answer · last activity over 1 year ago by chasly from UK

population alternate-history

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If clock and calendar was reinvented with today's knowledge, what could they look like?

9 answers · last activity over 1 year ago by The Vee

science-based culture time-keeping time alternate-history history

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How Would a Filter-Feeding Marine Turtle Feed?

2 answers · last activity over 1 year ago by JohnWDailey

biology alternate-history reptiles history behaviour

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Could Multicellular Life Evolve Sans Cryogenian?

3 answers · last activity over 1 year ago by JohnWDailey

evolution science-based alternate-history alternate-earth

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Could people of the 14th century create an inline engine for use in aircraft and vehicles?

5 answers · last activity over 1 year ago by Eric clifford

science-based technology steampunk alternate-history history science-fiction

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Space Age without Enlightenment?

4 answers · last activity almost 2 years ago by Imperator

space travel spaceships space-travel alternate-history history ships

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Making a Plague Worse?

3 answers · last activity almost 2 years ago by Arkenstein XII

biology evolution diseases alternate-history sea history

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History without resource driven wars

1 answer · last activity almost 2 years ago by System

biology reality-check psychology humans alternate-history history

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What would a medieval steam locomotive look like?

2 answers · last activity almost 2 years ago by ThunderWazp

reality-check science-based technology alternate-history history