Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Pumice is the only rock that floats on water.
14
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Cold water weighs more than hot water.
93
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Nearly 50% of the world's scientists are assigned to military projects.
71
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79