Savais-tu que.. La Grande Muraille

Lexie explains that there are more than 60,000 thoughts running through the mind during a day.

Lexie explains that some bones merge when they grow up, so that an adult's body has less bone than a child's body.

Lexie explains that cells that make the hands impermeable absorb water when the fingers are submerged for a long time in the water, which makes the fingers appear clutched.

Lexie explains that the human body is composed of 150 000km of nerves that can perceive sensations.

Lexie explains that a people of ancient India, the Arameans, would have lived before the ancient Greeks and the Egyptians.

Lexie explains that people in ancient India were very ingenious: they already knew how to build two-story houses, soundproof walls and more.

Lexie explains that the people of ancient India created the first toilets.

Lexie explains that the people of ancient India would be one of the first peoples to use a rule to measure.

Lexie explains that people in ancient India also had dentists and had created a drill able to remove cavities.

Christopher explains that the peoples of ancient India were very peaceful: there are few signs of war or weapons in their works and architecture.

Christopher explains that much information related to the civilization of ancient India is still unknown because no one has been able to decipher their language in the traces found.

Christopher explains that the people of ancient India are one of the first peoples to have made toys for their children.

Christopher explains that the bricks made by the people of ancient India were so solid that they were used by the British in the 1800s to build a railway.

Christopher explains that the Harappan peoples made an impressive bronze statue, which demonstrates that they knew how to forge iron.

Christopher explains that yoga already existed at the time of the Harappeans, people of ancient India 5000 years ago.