A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
The streets of Victor, Colorado, once a gold rush town, are paved with low-grade gold.
78
The cruise liner, 'Queen Elizabeth 2', moves only six inches for each gallon of diesel that it burns.
26
Mentally doing a task makes you better at it. Your mind can barely tell the difference.
18
The weight of air in a milk glass is about the same as the weight of one aspirin tablet.
63
Play-Doh was first manufactured as a wallpaper cleaner.
122