Niirah
Niirah t1_iuftuv1 wrote
Reply to ELI5 Are there any practical alternative fuel sources that alien civilizations might have if they weren't lucky enough to have oil and trees? by retsot
Steam, solar, electrical, geothermal, wind… all of these power sources are practical and reliable.
Niirah t1_iufvqrm wrote
Reply to comment by retsot in ELI5 Are there any practical alternative fuel sources that alien civilizations might have if they weren't lucky enough to have oil and trees? by retsot
Wood is not the only flammable material. And if we assume a carbon-based life form, it would be difficult to imagine them developing in an environment void of plant life.