More building blocks are needed to form the growing embryo — and the chromosome department is hard at work!

The formation of the embryo is in full swing, and the cells are working diligently to create all of the different body parts!

Cell division is now in full swing, and inside the embryo, the organs are being formed! All the cells now have to reach the places where they are needed.

One lucky sperm has made it into the egg – now the chromosomes from the sperm and the egg can start to link up.

In Part I of this episode, which deals with human birth, we start with the Big Bang and follow a troop of sperm as they make their way to the ovum.

In this final segment detailing the goings-on within a human cell, we learn about what happens when there’s a skin injury.

A few nasty viruses have managed to gain entry into the cells. But the white blood cells can handle them!

The journey continues inside of the cell, where one of the operators take a few elements along on a tour of all of the different respiratory processes.

Red and white blood cells, fats, carbohydrates, and more! They are all anthropomorphized in this zany animated look at how human cells are formed.

What is a cell made of, and how many of them are there in the human body? And what is the “primordial soup” from which all life on Earth emerged?

This series (originally created in French) explains processes in the human body, and in particular those related to cells and reproduction. We begin with the origin of the first cell—the source of all life on Earth!

Although Archimedes always wanted only to improve mankind, he has to use his intelligence to build war machines for the Greeks in his old age. The Romans want to hire him to work for them, but that is not to be …

The dying king asks Archimedes to work as an inventor of war machines, because the Romans want to attack the city of Syracuse. Will he be able to help come up with new ideas to help the army?

How will Archimedes be able to prove that the crown is not made of pure gold? Seeing his talent, the King asks him to help create systems for work that needs to be done.

The king suspects that his goldsmith has cheated him and his new crown isn’t really made of pure gold. Can Archimedes help determine what the crown is made of without smashing it apart?

In this video, you will learn what a gnomon was used for, who Euclid and Eratosthenes were, and what secret Archimedes thinks he discovered after his apprenticeship with Euclid.

Ancient Greece was home to many great thinkers, such as the physician Hippocrates, the philosopher Socrates, the sculptor Phidias, and the mathematician Archimedes.

Adalbert's mother thought it was a good idea to give the children a chemistry set – that is, something educational — to play with. But her plan backfires when Nick and Adalbert end up causing quite a bit of trouble!

The cold weather and a shortage of food eventually drove the Neanderthals to extinction, clearing the stage for Cro-Magnons, our direct ancestors. But you'll have to wait for the next episode to find out more about that!

A long afternoon lies ahead for Nick and Adalbert, and they really don't have much in common. Will they find something fun to do? Adalbert already has an idea, which at first seems rather daunting...

The climate is getting colder, the animals are disappearing, and the Neanderthals are gradually running out of food. Times are tough, and the Neanderthals are being forced to do whatever they can to survive.

Nick was looking forward to enjoying his day off school, but it turns out his mother has other plans for him.

The Neaderthals discover that fire makes meat taste better than ever! As time goes on, they also refine their hunting techniques and even work out how to lay rather sophisticated traps.

The boys fight over who gets to hand over the figurines to the teacher. One of the figurines ends up broken, but the other survives thanks to Chlodwig's athleticism and bravery. In the end, however, everything turns out differently than planned!