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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The temperature curve of the earth

Throughout earth's history, climate has been akin to a rollercoaster ride. The "fever curve" of our planet shows the global temperature fluctuations to date - reconstructed using historical climate data. Author: ZDF/Terra X/Gruppe 5/Luise Wagner, Jonas Sichert, Andreas Hougardy Redub: alugha Cli

What is a stromatolite

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