The average person has over 1,460 dreams a year.
Dolphins cannot stay long underwater because they breathe through their blowholes above water. S
The Skylab astronauts grew 1.5 - 2.25 inches (3.8 - 5.7 centimeters) due to spinal lengthening and straightening as a result of zero gravity.
The average garden variety caterpillar has 248 muscles in its head.
Bananas are actually giant herbs - related to the orchid family.
In an average lifetime a person will walk the equivilant of three times around the world.
Giraffes could pass out with blood filling their brain when they lower their neck, so they have a sponge-like organ in the head which slowly gathers and releases blood.
A hard working adult sweats up to 4 gallons per day. Most of the sweat evaporates before a person realizes it is there though!
Knowledge is growing so fast that ninety per cent of what we will know in fifty years time, will be discovered in those fifty years.
The male gypsy moth can smell the virgin female gypsy moth from 1.8 miles away.