Pure water (H2O) does not conduct electricity on its own.
46
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
The bark of an older redwood tree is fireproof.
65
Cold water weighs more than hot water.
93
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The storage capacity of human brain exceeds 4 Terrabytes.
140
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71