How Does Sewage Plant Work?
How Does Sewage Plant Work? A sewage plant works by purifying waste material and recycling it for a useful...
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Which Poisonous Gas Has a Sweet Smell?
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Would You Prefer an Electric Vehicle?
Most recent articles
Who Was Thomas Newcomen?
Thomas Newcomen (1664-1729) was the English inventor of the only practical steam engine in use from the...
What Is a Mirage?
What Is a Mirage? Mirages are optical illusions produced by extraordinary atmospheric conditions. They can...
How Does a Tuning-fork Work?
How Does a Tuning-fork Work? A tuning-fork vibrates to give a musical note of definite pitch or frequency...
What Is Tarmac?
What Is Tarmac? Tarmac is a hard black material used for roads, parade grounds or anywhere that a hard, even...
When Was the First Lighthouse Built?
When Was the First Lighthouse Built? The first known lighthouse was the Pharos of Alexandria in Egypt, a...
Why Do Myotonic Goats Faint?
Why Do Myotonic Goats Faint? Not all goats faint. Those that do exhibit fainting behavior are members of a...
Why Do Some Acids Cause Burns?
Why Do Some Acids Cause Burns? Some acids burn because they have a strong tendency to absorb water, giving...
Why Do Soldiers Salute?
Why Do Soldiers Salute? The custom of saluting has always existed in all cultures. A salute is a gesture or...
Who Invented the Rocket?
Who Invented the Rocket? The rocket, as far as can be established, was invented by the Chinese during the...