Activity for nonthevisorâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #263256 |
@msh210†indeed, [wikipedia](https://en.wikipedia.org/wiki/Life_expectancy#Variation_over_time) has the world average lifespan at 31 in 1900 and 48 in 1950 (more) |
— | about 4 years ago |
| Question | — |
Why would one hemisphere of a planet be very mountainous while the other is flat? Background I just read this question about how to get a planet to have one hemisphere with tropical climate and one with polar climate. The (not yet accepted) answer with the highest score recommends placing large enough mountains on one hemisphere, so that simply by altitude, it would be cold on t... (more) |
— | over 5 years ago |