4 August, 2018
The pumice stone, of volcanic origin, is the only rock that floats
3 August, 2018
The heart has the approximate size of the closed hand.
2 August, 2018
One light-year equals 9.5 trillion kilometers.
1 August, 2018
Printer ink is more expensive than petroleum.
31 July, 2018
You begin to feel thirsty when your body loses 1% of water.
30 July, 2018
Scorpions glow under ultraviolet light.
28 July, 2018
Room temperature is defined as between 20 to 25C (68 to 77F).
27 July, 2018
The most commonly forgotten item for travelers is their toothbrush.