Fasting and ketones

If you stop eating food and the glucose is used up, the body starts to burn fat. Ketones are released, which then supply energy to the brain and other organs. Author: 3sat/nano, Spiegel TV, Liz Wieskerstrauch, O. Gurr, R. Heinze, D. Ritter, J. Staiger, Jan Cords, tricky GbR Translation & redub: alugha Click here to see more videos: https://alugha.com/TerraX

LicenseCreative Commons Attribution-ShareAlike

More videos by this producer

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:

Causes of air pollution

Air pollution has many causes. The biggest polluter is energy production, with two-thirds of particulate emissions coming from coal-fired power plants. Road traffic and factory farming in agriculture also contribute to this. Author: 3sat/nano/Labo M/Johan von Mirbach/Chris Caliman/Christoph Valenti

What are viruses and how do they attack?

There are probably 100 million different types of viruses. Their attacks always follow the same pattern. The viruses attach to a cell, transfer their genetic material and force the host cells to produce new viruses. Author: 3sat/nano/Docstation/Johan von Mirbach/Anna Grün/Riccardo Giese/Nico Schleg