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...

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.

What is a gyrocopter? How is it different from a helicopter? You are going to find out all of this and more in this clip. Have fun!

RheinMain TV asks: What do zoo animals actually do in the wintertime? Do they venture outside or remain huddled together indoors?

Manfred Niekisch, the director of the Frankfurt Zoo, answers the question about how the zoo animals handle the harsh winter months. He also reveals the unique treat they get during this special season.

Let's explore the concept of a single-family passive house: is a future without residential dependence on fossil fuels possible?

A tiny urban nook yields an enormous amount of living and working space, winning environmental awards to boot.

As a preparation for Frankfurt’s “Herbs Day,” more than five hundred children made propellers and planted them in a field in Frankfurt’s Bonames district.

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!

Diane gives us a tour of the Karlsruhe Institute of Technology. She goes by the dining hall, the most important lecture halls and the twenty-four-hour library.

The Sun is the dominant orb in our planetary system. According to researchers, its light will extinguish in 4 billion years. Enough time for a couple more sunbaths. A documentary by WissensMagazin.

The desire to be able to see further and further out into space is made possible by an amazingly large telescope in the Ataca wilderness in the northern part of Chile. It is aptly called VLT ("very large telescope") and gives us a glimpse into the cosmic past. Enjoy this journey back in time! A documentary by WissensMagazin.

An interesting discussion from the field of astronomy: Considered minor planets, asteroids are categorized according to their orbits. Also, contrary to sensationalistic Hollywood’s film portrayals, the probability of them posing a danger to planet Earth in the short-run is slight. To the science enthusiasts among our subscribers, enjoy! A documentary by WissensMagazin.

How does a star die and what actually happens afterwards? A documentary by WissensMagazin.

Learning to drive a boat, taking in exhibits and tasting a great wine – all in a day’s work when visiting Flanders.