For the third time, the Day of Sustainability took place through the German state of Hesse. It is intended to inform people about sustainable lifestyles, with this year's motto: Regional, conscientious and fair — sustainable consumption in Hesse. A report from rheinmaintv.

A circus tent full of sustainability experts: This image was presented today to journalists in Frankfurt-Ginnheim, as 300 fourth graders from Frankfurt primary schools celebrated the graduation ceremony of the first Frankfurt "School Year of Sustainability" in the children's Zarakali Circus.

The German band Monsters of Liedermaching sing the song "Nuclear-free Power Plant" — a serious topic performed with perfect charm!

Does this sound familiar? The lights are all on, the computer is running and next to it the radio is blaring, the heat is on full and the window is wide open. It's your kid's room, and he isn't even home! Hessian Environmental Minister Priska Hinz is trying to change all of that with sustainability projects in the classroom.

Creepy crawlies! These slimy little frogs and newts may seem pretty disgusting when you see a plastic bucket full of them, but they are very important in the balance of nature and are endangered species. The NABU (Nature and Biodiversity Conservation Union) in Hessia shows us how they saved thousands of the creatures from certain destruction from a pending construction project. Copyright: Deutsche Presse Agentur [The German Press Agency]

On a Sunday evening around 6 p.m., there was an earthquake in South Hesse, with the epicenter in Ober-Ramstadt near Darmstadt. With a strength of 3.2 on the Richter Scale, there was no major damage reported, but the quake certainly gave some of the residents quite a scare!

WARNING: this video contains graphic footage of animals being treated brutally, the reason in fact that singer Cassandra Steen has volunteered to make this statement for the PETA (People for the Ethical Treatment of Animals) anti-fur campaign.

Construction is the biggest source of political corruption in the world, and here a case in point: the existence of hermit Friedmunt Sonnemann is being threatened by the construction of an elevated Moselle River overpass, that according to critics is neither wanted nor needed by the inhabitants. (video copyright dpa)

The "Femeiche" oak tree in North Rhine-Westphalia may well be the oldest living tree in Germany, dating from the first millenium AD. (video copyright dpa)

These are not a bunch of free-ranging hippies, on the contrary: the World Wide Fund for Nature organized the event in Grugapark in Essen with a very clear goal in mind – to publicize the need to protect our forests as wildlife habitat. What better excuse do 848 people need to hug a tree? Viel Spaß!

Yabla's very own Eva takes us on a nice stroll though an autumnal German park and fills us in on the best things about the German vocabulary for this time of year. Enjoy!

We know that cities use machines to clean the streets, but did you know that specially-designed sidewalks can clean the air we breathe? Learn about the new way that the city of Frankfurt is working to improve the environment in this fascinating report from Rhein-Main TV. Umweltverschmutzung? Nein danke!

The European Fountain Society, with its seat in Karlruhe in southwestern Germany, is committed to the preservation and care of historical fountains and emphasizes the importance of water for man and culture.

At more than 500 meters, Ulrichstein is the town in the state of Hessen with the highest elevation and, thus, an ideal location for harnessing the wind. Satisfying Germany's demand for energy in the new energy economy is the subject of this informative clip from the highland region of Vogelsberg. Copyright: Deutsche Presse Agentur [The German Press Agency]

In this video the German cabaret performer Dieter Hildebrand explains the vital importance of trees for maintaining the Earth's water supply and for man's survival.