Pierrot wakes up on a beautiful and verdant planet, whose king tells him of the damage done by some evil-minded visitors long ago.

Pierrot and his copilot are sent on an observation mission to Andromeda. They stop by an intriguing Green Planet with a wonderful spongy surface.

In the second part of this sci-fi cartoon series, the Consul and General of Cassiopeia begin planning their conspiracy against the Galactic Confederation of Omega.

In the second episode of this animated series, we find out that not brushing one's teeth regularly can have dire consequences. The bacteria fight it out in this little boy's mouth and lose the battle, thanks to the dentist's drill.

Guess what happens when little children forget to brush their teeth after eating sugar? Watch this fun cartoon and find out. You may never want to eat sugar again... unless you brush your teeth of course!

The battle between toothbrush and cavities ignites in this lively cartoon.

Learn what happens when sugar and bacteria attack your teeth enamel... It's the price we have to pay for eating cake!

In this enjoyable cartoon about the human body, you will see the taste buds in action... when they're not slacking off!

Find out what happens in the body when we eat: the roles that teeth, the tongue, and nerve impulses play. But let's not forget about umami!

The platelets vanquish the bacteria in the final installment of this animated series on blood. Who knew that a simple cut could be so epic?

Watch the blood platelets in action in this fun cartoon. Moral of the story? Always listen to your mother.

When the young platelets in this cartoon decide to have some fun and create a sort of "platelet pyramid" out of themselves, their older friend warns them that they could be causing a blood clot!

Although antibodies mainly protect against bacteria, viruses, and other foreign substances, sometimes they can also attack your own blood cells! But this cartoon explains why you don't have to worry too much about that happening.

Have you ever wondered what a blood platelet actually does? Find out as the Once Upon a Time... series tackles biology.

In the last segment of this animated series on ancient Greece, we learn about the later years of the empire, filled with endless wars and the ostracism of some of its most famous citizens.