Dr. Hansen still doesn't have any patients, and his daughters are getting worried, too. Is there anything they can do to help? Meanwhile, he finally meets Jonas's family.

Jonas's world implodes when he realizes that Oswald has gone. His father must have discovered his hideout...

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.

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.

Crime-scene cleaner Schotty shows up at the house of a distraught woman who’s allegedly been attacked by a “pig.” But is she talking about a piggish man — or an actual pig?

Schotty and Wiebke reminisce about old times, and how their relationship began. Then Wiebke reveals something that throws Schotty off…

After finding out that his ex-girlfriend Wiebke ended up marrying their old friend Gerold, Schotty starts prying deeper – what else might she be hiding from him?

Schotty tries to find out why Wiebke left him back in the day – and why she lied to him about where she had spent time after their breakup.

Schotty and Wiebke start digging deeper into their past relationship. When they both recall an argument that was one of the triggers for their breakup, things get very emotional…

Wiebke tells Schotty about her life with Gerold and how their marriage has changed over the years… and then Schotty discovers something that shatters her understanding of her relationship.

As Schotty and Wiebke consider what Wiebke should do with the startling discovery that her husband has been cheating on her, the spark between the two former partners reignites — and there’s no need for further discussion!