Parrot parents "name" their children with a signature call.
112
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
Sunflowers can be used to clean up radioactive waste.
17
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
The colossal squid has the largest eyes in the world.
4
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Sound doesn't travel in space.
255
Pumice is the only rock that floats on water.
14