The power structure in the Arab Empire

Around 700 AD, the Arabs ruled over about 60 million people. At the head of the empires there was a caliph. Right below were the governors of the provinces, who primarily collected taxes. Author: ZDF/Terra X/Gruppe 5/ Susanne Utzt, Sahar Eslah, Martin Carazo Mendez/ Martin Christ, Marc Riemer, Joachim C. Seck/ Igor Garbuzenko, Ramin Sabeti,/ Faber Courtial, Jörg Courtial/Gruppe 5 FX, xkopp creative Translation and dubbing: alugha Click here to see more videos: https://alugha.com/TerraX

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Sustainability seals in the textile industry

The new governmental "Green Button" seal of approval was introduced at the end of 2019. Companies must prove that they act responsibly in terms of human rights, social and environmental issues. In addition, 26 criteria are assessed on the product side. Authors: 3sat/nano/medicine/Dunja Keuper/Johan

Voyager 2 and the scale of the solar system

In 1977, NASA's Voyager 2 space probe began its journey to the planets of our solar system.. But the probe also provides clues about the solar system beyond the planets. Author: ZDF/Terra X/C. Haak/A.M. Wendlandt, Nikolai Holzach Translation and redub: alugha Click here to see more videos: https

Influence of UV radiation on skin colors

The global distribution of human skin tones matches the intensity of UV radiation. At the equator, where radiation is highest, dark skin protects against radiation damage. In the north, on the other hand, lighter skin is beneficial. Author: ZDF/Terra X/Tobias Schultes/Albrecht M. Wendlandt Transla