Propulsion effects in sailing

Sailing uses two propulsion effects: Drag and lift in combination. Wind pressure and air flow are responsible for the movement. Author: ZDF/Pur+/Autorenkombinat/Tobias Schönke/Rita Gerhardus-Faust/Jochen Schmidt Translation and dubbing: alugha Click here to watch more videos:

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The menstrual cycle

From the first menstruation until menopause, a hormonal cycle regulates the female body to prepare it for a possible pregnancy. The cycle can be divided into different phases. Author: ZDF/TerraX/Anke Plascher/Ellen Haas/Anna-Lena Neidlinger/MUSIC Maximilian Mohr Translation and dubbing: alugha Cl

What is the significance of the Easter candle?

During Easter Vigil, Christians light the Easter candle on the Easter fire. With this light in the darkness, they remind us of what the biblical texts describe: Jesus conquered death. Author: ZDF/Kirche und Leben kath./Karoline Knop/Bettina Reich/Maximilian Mohr Translation and dubbing: alugha Cl

The origin of life

For life to develop, it needs amino acids, sugars, bases and fats. In addition, RNA, an acid and a kind of chemical Morse code - this is how chains with building blocks are created. But it is only a protective lipid shell that turns the chains into a cell. Author: ZDF/Terrax/R. Schlosshan/F. Hädeck