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I was looking at the reply to this survey map:

complainig humans don't live in the ocean. Which lead me to the question of how large of a radius around every person you would have to color, tracing all their movements for their entire life, to color in the entire earth.

Naturally, this radius would have to be set such that the most remote point across time is just barely covered. So what would that point be, and how far away has every human been from it for all of time?

I assume this would be somewhere in antarctica, or maybe in the pacific? With a radius of surely not more than a few tens of kilometers, right? Maybe even less?

I would say let's, since we obviously wanna count ships, also count planes and subs. But let's not count astronauts.

Some clarifications:

• This is all on a map, height does not matter. Walking somewhere or flying over it is the same.
• We are talking absolutely noone has been closer than an absolute distance. If a single person has travelled there, the location is out.

cross-posted from: https://lemmy.world/post/48224835

waste heat of 23 atom bombs a day

That actually makes the data complex a 16 gigawatt thermal load project, the “equivalent of about 23 atom bombs worth of energy dumped into this local environment every single day,” Davies said.

Those bombs would have about 14kt tnt equivalent each. tnt has about 4.18MJ/kg, so 4.18TJ/kt. 16GW over a day is 1.5PJ, so we have 330 kt per day.

This comparison will surely be useful to all designers of orion-drive style nuclear combustion power-plants.

I think the rules require me to censor the one-who-was-not-known too.