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

In Part 2, you'll get to know more gemstones and learn about their origin and uses, as well as the properties that are attributed to some of them.

"Ohne dich (schlaf ich heut Nacht nicht ein)" [Without you (I won't fall asleep tonight)] is a love song by German pop-rock band Münchener Freiheit. In the chorus, the singer assures his lover, "Das was ich will, bist du" (What I want is you).

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!

In this humorous video, you can see a mother's solution to her children constantly bickering about who has more. Little do they know, it will remain part of their lives well past childhood...

Drivers are seeing red at this traffic light in Dresden – and it's been that way for 25 years! Does that sound insane to you? It is! But there's a reason behind it ...

In "Mond" (Moon), Clueso and Elif express their longing to escape planet Earth. Enjoy this song and take off with the two of them!

In this video, Alina takes us on a tour of some famous places and buildings in Zurich — and tells us some interesting facts about them and about the city itself.

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!

Housework can also be fun, and Eylin tells us what she does to make this the case. Even though there are a few things she doesn't like doing, she still prefers cleaning her house herself.

"Wandern" ("Wandering") is a beautiful, reflective song about the journey we take through life, both alone and together with others. It's about being connected and disconnected, and experiencing life's ups and downs.

Do you love gemstones and minerals? Then check out this video, where Eylin gives you fascinating info about all kinds of semi-precious stones.

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...

Sascha rises from the dead, and suddenly discovers his commitment to nurturing young talent. He and Jan Böhmermann might be teaming up! Meanwhile, Dr. Wolter reveals to Billie why she envies her.

In "Roulette," Max Giesinger sings about flirting with a new neighbor who gives mixed signals.