In fact, all of the gold  that we've mined in history could be piled into  just three Olympic-size swimming pools, although this represents a lot of mass because gold is about 20 times  denser than water.
Tot aurul extras de-a lungul istoriei ar putea umple doar trei piscine olimpice, deşi are o masă foarte mare, fiind de aproape 20 de ori  mai dens decât apa.