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.

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.

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!

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

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.

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 banished hunter finds a mate and is accepted into his new family as an equal. But there is someone who does not like that at all...

The Neanderthals discover that tools can be made from stones, new hunting methods are discovered, and the many different clans try to resolve disputes through negotiation.

In this episode of our journey through time, we meet the Neanderthals, who roamed the European continent for around 65,000 years before disappearing almost without a trace. They lived as clans of hunter-gatherers, and knew how to make tools and fire.

Life is hard for Homo erectus, whose biggest challenge is to find enough food. At some point, one thing becomes very clear: It's better to hunt as a team!

The age of Homo erectus has dawned! What abilities did he have and in what ways did he resemble modern humans? To find out, watch this video, which ends with a quotation from one of Germany's greatest poets, Friedrich Schiller.

Now the apes are slowly climbing down from the trees and starting to walk upright. What are the names of the next species and what characterizes them? Join us and witness this stage of our journey through the history of mankind.

Whether you are learning to drive stick shift or enjoy doing so, it's a good idea to understand the clutch. How does it work and how can you prevent stalling?

The dinosaurs die out and the Earth is populated with small mammals and apes, who slowly adapt to their surroundings over millions of years.

This video on the history of life on Earth looks at the emergence of reptiles and amphibians on land, and the different types of dinosaurs that roamed the land before continental drift occurred.

Eylin gives a summary of the planets in our solar system, and how the Earth's movement creates what we perceive as days and years.

This series tells the story of mankind, in this episode starting billions of years ago with the early days of the earth's existence, when there was not yet life on our planet.

Lake Lucerne in central Switzerland is a large energy reserve that provides cold and hot water for individual and collective heating, cooling, and air conditioning needs in an environmentally friendly way. Find out more about how it works!

The structure of the German language makes it easy to combine infinitive verbs with prefixes to completely change the meaning of the original verb. This makes it easy to come up with new words — and as a result, the Duden is always expanding!

The Senckenberg Society, a non-profit scientific research institution, is celebrating its 200th anniversary. The Senckenbergers, as the scientists call themselves, are looking for solutions to climate change, poverty, overfishing, and more.