I always hear that the traditionally heavy US diet ( or any " traditional" cuisine, really ) was developed for people working long hard hours of manual labor, farm work, etc., so what did the people who had sedentary, less active jobs eat? What were the historical diets of people who didn't haul lumber through the woods or dig ditches, but recorded numbers or did accounting or translated documents?
If an alien located on a planet 100 light years from here was to switch on a big, multi-frequency radio receiver, and record all the noises coming from outer space for the next hundred years, on all frequencies, how many soap operas, advertisements and new broadcasts would they pick up from Earth? Would a mass-market radio, similar to our Earthly equivalents, pick up anything? Over time, as the number of Earth transmissions increases exponentially, would the alien pick up a cacophony or a damp fizzle? [more inside]
How does visible light damage ancient documents? [more inside]
Gravity/Life/SocietyFilter: So the Earth is all lumpy, with more or less gravity in some places. Has anyone ever corroborated it with life/social/world things? Many questions inside... [more inside]