The 18-kilometer Fehmarn Belt Tunnel connecting Denmark and Germany will be the longest immersed tunnel in the world. This video explains how 360,000 tons of steel and 3 million cubic meters of concrete are being used to create the tunnel, which will run between Rødbyhavn on the island of Lolland and Puttgarden on the eastern coast of Schleswig-Holstein.

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!

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.

To everyone's surprise, some last-minute adjustments are made to the commercial. But they should have known that Hansen was always going to have final word.

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 commercial has been shot and is now ready to be edited. Mr. Hansen has also come to see the results, accompanied by Ms. Gerstenberg. The look on his face speaks volumes...

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.

Now all that's missing is the music for the commercial. The agency has brought in the experts to produce a suitable rap with children. And Mr. Hansen finally makes a personal appearance to see the results.

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.

The shoot seems to be going really well until a problem suddenly comes to light, and Lutz and Adrian immediately blame each other. Can they work it out before the client notices?

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!

Here we witness the crew's extensive preparations for the Twinfruit shoot and see Strawberry and Orange in action. Ms. Gerstenberg and Mr. Müller from the Hansen company are most impressed by what they see.

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.

The representatives from Hansen and Gunnar's team meet to discuss all the steps that need to be clarified before production. There seems to be general agreement on the idea, but it's not without some tense moments.