
Natural gas does not have any odor. In order to detect a gas leak, some gas companies add a chemical that smells similar like rotten eggs.


Natural gas does not have any odor. In order to detect a gas leak, some gas companies add a chemical that smells similar like rotten eggs.
There are ten million bricks in the Empire State Building. The world’s largest mammal, the blue whale, weighs 50 tons at birth. Fully grown, it…
The US nickname Uncle Sam was derived from Uncle Sam Wilson, a meat inspector in Troy, New York. The living does not outnumber the dead:…
Boiling point of water In the early 18th century Anders Celsius defined his temperature scale on the melting and boiling temperature of water. You might…
                  To buy a McDonald’s extra value meal in Russia it would cost the average Russian worker 1 months pay.       Russians…