Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Each day, up to 150 species of life become extinct.
-23
A ball of glass will bounce higher than a ball made of rubber.
73
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Out of all the senses, smell is most closely linked to memory.
146
Cold water weighs more than hot water.
93