Cold water weighs more than hot water.
93
The only letter not appearing on the Periodic Table is the letter "J".
180
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Balsa wood is classified as a hard wood!
41
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Scientists are now able to grow 'beating' heart tissue in a lab!
162