We don't know exactly how and when life began on Earth, but the answer probably lies in the depths of the ocean: It is here that the first unicellular organisms evolved.

LOTTE and Max Giesinger talk about their new single, "Auf das, was da noch kommt" and how much fun they had shooting the music video with so many celebrity guests in hilarious roles.

A private lab in Germany is working to create a vaccine for COVID-19 as quickly as possible. The US and German governments are already vying for access to the results.

Angela Merkel explains that social distancing will help to slow the spread of COVID-19, acknowledging how difficult it is to not be able to visit loved ones in uncertain times. She also discusses the government's responsibility to consider all possible approaches and keep the public informed.

Chancellor Angela Merkel discusses the essential actions the German government has taken to slow the spread of COVID-19, including shutting down social activity and tightening border controls. The people's responsibility, she says, is to remain calm and not engage in panic buying (such shopping trips are referred to as die Hamsterkäufe in German) when it comes to groceries.

In a rare televised address, Chancellor Angela Merkel urges the public, directly and in plain language, to take drastic steps to prevent COVID-19 from spreading in Germany. She calls the coronavirus one of the greatest challenges the country has faced.

Selma's father has accidentally left his ID card at the hospital, but doesn't know how to get back there. He runs into Yara on the train platform, and she tells him what his options are for public transportation.

Fear of the coronavirus has caused many people to stock up on food and supplies. Fortunately, German grocery stores have been able to keep up with the increased demand without any problems. Copyright: Deutsche Presse Agentur [The German Press Agency]

This segment begins with a discussion about generational differences, and then continues on to an exploration of the roles and responsibilities of the government and of the people.

With Valentine's Day gaining popularity in Germany, the demand for red roses and other flowers is also growing. Wiesbaden florist Erhard Priewe discusses shifting trends, product shortages, and why the holiday is not as "commercialized" as many people believe.

Sarah continues exploring the Christmas market in Karlsruhe. She visits the talking "fairy tale boxes," the ice skating rink, and a stand where they make crêpes with Nutella!

Sarah shows us around Karlsruhe's "Christkindlesmarkt" Christmas Market, which has three areas. She stops at various stands to buy a gingerbread heart, a mulled wine, and some alcohol-free children's punch.

Nico runs into Selma, who wants to withdraw some cash before she goes to her language class. While Nico waits for her, Selma has some trouble with the ATM.

Yara is a bit overwhelmed as she tries to catch up with all of the work she didn't complete during her absence. Tarek stops by, and they are both happy to get good news from Nico.

Nico needs to open a German bank account, but he's a bit nervous. Max tells him what to expect and gives him pointers.