Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Indoor pollution is 10 times more toxic than outdoor pollution.
62