Schotty pays for his currywurst with a very special five-euro bill, which turns out to be part of an outrageously expensive piece of art from the gallery...

All's well that ends well? The missing fiver turns up again, Schotty receives a surprising gift, and, in the end, the only honest person comes off worst...

On his new assignment, Schotty meets a young man who has been in a vegetative state for six years, and his caregiver, who explains why Schotty's services are required today.

Schotty heeds the caregiver's advice and tells Matthis stories from his everyday life. Talking about one soccer game of the 2014 World Cup, he gets so excited that he falls...

Schotty, who is claustrophobic at the best of times, wakes up to find himself inside Matthis's head. As he starts to panic, Matthis tries to help calm him down...

Schotty talks to Matthis, who is glad to finally have the opportunity to ask all the questions that have been bothering him since he first found himself trapped inside his own head.

How does Matthis feel about living in a coma? Can he see any upsides to it? An interesting conversation develops between the two men, but Schotty suddenly has to break it off because he has a rather mundane need.

Matthis begins to despair when he notices that the feeling in his eyelid has suddenly gone. Schotty tries to distract him with a story.

With the help of Schotty's narration, the two men turn Matthis's mind into a less frightening and more joyful place. But Schotty slowly realizes that he's not going to be there much longer.

In this video, Anna and Teresa play a game called "Teekesselchen" ("Teapot"), in which you have to guess a word that has more than one meaning. Such words are called homonyms.

Was Sisi of Austria truly the romantic fairytale princess that everyone believed her to be? Join us as we delve behind the scenes with Katrin Unterreiner, co-founder of the Sisi Museum in Vienna's Hofburg Palace.

Could eating less help us look younger, and more importantly, could it help us live longer? A few studies seem to show that this could be the case, but there are no conclusive results yet.

Although it might help with fighting age-related diseases in the future, research into calorie restriction and aging is not so far along – or free of contradictions – that we should factor it into our dietary choices.

In this video, physicist and author Harald Lesch talks about how Germany could phase out coal and nuclear power completely and still meet all of its energy needs.

Germany is not a big enough country to devote all of its land to creating renewable energy – but there is another place with vast expanses of empty space and limitless sunshine.