The only letter not appearing on the Periodic Table is the letter "J".
180
A cesium atom in an atomic clock beats over nine billion times a second.
43
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116