One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
The only letter not appearing on the Periodic Table is the letter "J".
180
Pure water (H2O) does not conduct electricity on its own.
46
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
One 75-watt bulb gives more light than three 25-watt bulbs.
57
