Out of all the senses, smell is most closely linked to memory.
146
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Diamonds can be shattered with a hammer.
-104
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Indoor pollution is 10 times more toxic than outdoor pollution.
62
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Each day, up to 150 species of life become extinct.
-23