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Did you know that Silicon Valley is not really located in a valley? No, it's not! It's a geographic area south of San Francisco in the United States that is home to over 6,000 high-tech companies. But it's not a real valley. Here is a top on the history of Silicon Valley.

Artificial intelligence, or A.I., allows computers to learn by themselves to perform tasks without human intervention. This mode of learning is comparable to the one that allows a child to understand the logic of a computer by dint of experiments. Here is a top on artificial intelligence!

Here is a top on the difference between the sea and the ocean!

The invention of the printing press was a real revolution for humanity. It even favored the emergence of democracy. Let's see how this is possible. Here is a top on the consequences of the invention of the printing press.

Top on noise induced hearing loss!

The invention of the microscope led to the dramatic extension of human life. How far have we come between these two events? Here is a top on the consequences of the invention of the microscope.

How many languages do you speak? In the country we are about to discover, more than 40 are spoken. If French is the official language, Bambara is the most spoken. Here is a top on Mali!

Vitamin A, which is found in abundance in carrots, is essential for growth and promotes healthy immune system function. Here is a top on vitamin A!

You may already know most rocks and minerals! The top 5 will allow you to learn more about their characteristics and their daily uses.

The human being is a very strange mammal. After spending millions of years learning to stand on two legs, modern life has caused us to lose that hard-won good posture. Here is a top on posture problems.

It is estimated that there are more than one million earthquakes every year in the world, that is 2700 earthquakes every day. That's, on average, 2 earthquakes per minute, like right now. There will be 3 more during this video. So it's important that our buildings be solid. Hang on, here we go! Here are the top ideas to…

Sedimentary rocks are present everywhere in our environment and contain treasures. They tell us many things about our past, in addition to providing us with valuable mineral resources.

Igneous rocks are the result of the slow cooling of magma, the hot, viscous substance found in the depths of the Earth. Here is the rundown on igneous rocks.

Do you know opera? It is a complex art form where all human emotions are expressed on stage. Here is a top on opera!

Concrete is the most important building material of our time. More than 4 billion tons of this artificial rock are produced annually worldwide. Here is the top on concrete!