There are so many kinds of apples that if you ate a new one everyday, it would take over 20 years to try them all.
34
Couples' personalities converge over time to make partners more and more similar.
235
The human sigh acts as a physiological reset button.
23
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
Parrot parents "name" their children with a signature call.
112
One human hair can support 3 ounces.
191
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88