#730 How long do virus and bacteria live for?
How long do viruses and bacteria live for? It depends on the virus and the bacteria. Also, bacteria are alive, but viruses […]
#729 How do night vision goggles work?
How do night vision goggles work? There are two types: the old style and the new style. The old-style goggles work by […]
#728 What is a sprain?
What is a sprain? It is when the ligaments around a joint are injured. There are 350 joints in the human body, […]
#727 What is a speakeasy?
What is a speakeasy? It was a bar where alcoholic drinks were illegally sold during the era of prohibition. From 1920 to […]
#726 Why does Australia have so many dangerous animals?
Why does Australia have so many dangerous animals? It actually doesn’t have as many dangerous animals as people think and there are […]
#725 What are stalagmites and stalactites?
What are stalagmites and stalactites? They are deposits of minerals that form in caves. Stalactites hang down from the top of the […]
#724 When did sailing ships die out?
When did sailing ships die out? There are still ships that use sails today and a new type of large cargo ship […]
#723 What is CRISPR?
What is CRISPR? It is a way of editing genes and it stands for Clustered Regularly Interspaced Short Palindromic Repeats. It works […]
#722 Why does time go forward not backward?
Why does time go forward not backward? Because of entropy. Entropy is the measure of how random and dispersed the energy and […]
#721 Who was the first king?
Who was the first king? This could be a question that is impossible to answer because most of the records of early […]