A 'jiffy' is an actual unit of time for 1/100th of a second!
66
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Billions of neutrinos pass unnoticed through your body every second.
6
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Scientists aren't sure what color dinosaurs were.
312
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57