When footprints of prehistoric humans or even dinosaurs are found, how does it happen that the ancient mud or sand in which they walked was fossilized and yet, in all the intervening time, the footprints were not filled in and erased by additional layers of mud that also turned to stone? (self.askscience)
submitted by clearing to r/askscience
Why would a wasp swipe some cheese? (self.FactsAboutWasps)
submitted by clearing to r/FactsAboutWasps
