Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Iron weighs more after it rusts.
16
Billions of neutrinos pass unnoticed through your body every second.
6
Research indicates that plants grow healthier when they are stroked.
173
4.5 pounds of sunlight strike the Earth each day.
27
One barrel of petroleum holds 42 gallons.
20
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79