Activity for Catgut‭

Type	On...	Excerpt	Status	Date
Question	—	Why build underwater outposts, rather than ocean-surface settlements? Suppose we've colonized a planet with 99% of the surface area covered by oceans. It has submerged continental crusts, averaging 200-500m underwater, with the average depth of open ocean being 1000-1500m. Other than the difference in surface geography, consider the planet generally earthlike (unless d... (more)	—	over 5 years ago
Question	—	How would a lack of smokeless propellant affect WW1? Gunpowder, also known as black powder, is some nasty stuff. It's extremely corrosive, it produces large amounts of obstructive grit and fouling, and using it creates a cloud of obscuring smoke. So when Poudre B was invented in 1884, this was a big deal- suddenly the great powers of Europe had access... (more)	—	over 7 years ago