André Wiersig has had some brushes with death in his time. He tells us about his experiences and the peaceful relationship he has with the other species that swim with him in the ocean.

Eylin tells us more about the trees that can be found in Germany. She also gives us a few simple pointers on how to recognize them, and tells us why she thinks people like trees so much.

How does André Wiersig prepare for the cold? How did he get into the game in the first place? Watch this clip to find out.

Here's one for lovers of trees and forests. Eylin introduces the most common types of tree found in Germany and also tells us about the interesting history of the country's forests.

In this part, we find out how it all began and why extreme swimming is not the way to go if you are mainly interested in exercising to look good.

André Wiersig is not your average swimmer who just goes to his local swimming pool. This is a man who likes to push the boundaries of what is humanly possible, swimming out in the open seas without any protection from the cold.

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.

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 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...

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.

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?

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?

Land is used in different ways in Germany: for housing, commerce and industry, agriculture, transport, or nature reserves. Different parties have conflicting interests when it comes to deciding what to build where. This is where spatial planning comes into play…

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!

What are the top three friendliest sea creatures? We won’t give the answer away, but you can find out more in this video!