Why do Africans have darker skin?
Every nation has its own distinctive skin tone. Europeans have pale skin, and Asians have dark, yellowish skin....
Is it true that Indians don’t grow beards?
Indians are called the Native American population. This name arose by mistake, but firmly attached to the local...
How was body temperature taken before the thermometer was invented?
Body temperature is one of the most important indicators of the condition of the body. In modern medicine,...
How much does all the air on Earth weigh?
Air is an integral part of our lives. It cannot be seen or touched. Also, the air has...
When and how did credit cards come into being?
Today, the credit card is commonplace. It allows you to quickly pay for almost any purchase and not...
Why are the roofs bent upwards in China?
The pointed roof of a pagoda with curved edges invariably evokes associations with Chinese architecture. The exotic silhouettes...
12 facts about nails you didn’t know
Nails are more than just the decoration of your fingertips! They play a crucial role in the human...
Why do we need starch?
Patented in the U.S. in 1841, this product quickly took its place in our kitchens. Any stay-at-home parent...
Why are sewer manhole covers round?
A familiar detail of the urban landscape is sewer manhole covers, almost everywhere, in all countries of the...
Where do alpacas live?
One of the major export items of Peru is the excellent wool, which is valued all over the...