Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
For every gallon of sea water, you get more than a quarter pound of salt.
45
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
One barrel of petroleum holds 42 gallons.
20
Out of all the senses, smell is most closely linked to memory.
146
Iron weighs more after it rusts.
16
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0