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]

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)

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.

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.

The International Green Week in Berlin is the world's most famous agricultural trade fair. This year the farmers are very pleased with the results and with the increased consumer interest in agricultural products and renewable production processes.
Copyright: Deutsche Presse Agentur [The German Press Agency]

Three cuddly lion cubs were born in the Neuwied Zoo. After being rejected by their mother, the little ones are being looked after by animal caretaker Petra Becker. Copyright: Deutsche Presse Agentur [The German Press Agency]

With their song “Good Appetite” [Bon Appetit], German rappers Rapucation ask everyone to think about their consumer behavior and its consequences, as well as considering the interests of the children. The song was written on behalf of the German Council for Sustainable Development.

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.