Savais-tu que... Le chocolat et le cerveau

Christopher explains that the Incas were already doing surgeries more than 3000 years ago to try to heal the wounds of war.

Christopher explains that it was the Incas who cultivated the first potatoes.

Christopher explains that the Inca houses were built with cut stones to fit perfectly against each other; it was not necessary to put cement to hold them.

Josée explains that some Incas put bandages around the head of their baby so that their skull lengthens growing up.

Josée explains that the Incas had built more than 40,000 kilometers of roads and moved on foot or on the back of animals.

Josée explains that the Incas wrote very little: mail carriers had to memorize messages in order to deliver them.

Josée explains that the Machu Picchu is one of the only Aztec cities not to have been destroyed by the Spaniards: they did not find it because of its high altitude.

Josée explains that the Aztecs played soccer in their day: they found themselves on a ground where he had to pass a ball in a stone circle.

Josée explains that the Aztecs recognized the work of their warriors by creating a tattoo in their image after a war victory.

Josée explains that the Aztec population disappeared, among other reasons, due to smallpox, which had been brought to America by the Spanish.

Ancient civilizations did not write on ordinary paper. They used animal skins to write and communicate with each other.

Lexie explains that the ulnar nerve is responsible for the tingling sensation that occurs when one strikes one's elbow.

Yawning is part of our daily lives and is often associated with sleep. But do we really know why we yawn?

Blood circulates in our bodies. In this episode, Lexie introduces us to interesting facts such as the speed of blood flow.

Did you know that the word opossum comes from the Anishinabemowin language? They can be found in Canada and as far south as Central America.