Sound at the right vibration can bore holes through a solid object.
134
The bark of an older redwood tree is fireproof.
65
Research indicates that plants grow healthier when they are stroked.
173
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
One barrel of petroleum holds 42 gallons.
20
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79