The invention of the battery

By layering copper disks, cardboard dipped in acid and zinc disks, physicist Alessandro Volta invented the so-called "voltaic pile," the world's first battery. Author: ZDF/scobel/Claus Ast/Tamara Skalski/Maximilian Mohr Translation and dubbing: alugha Click here to see more videos:

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The four voltage levels in the power grid

Our power grid has four different voltage levels. The higher the voltage, the lower the energy loss during distribution. From the maximum voltage of 380 kilovolts (kV) to the low voltage of 230 volts for the end consumer in private homes. Author: ZDF/3sat/nano/Marco Polo Film AG/Dietmar Klumpp/Holg

Why are insects important?

Insects are important for humans and for nature - because everything is interconnected. For example, the fewer bees there are, the fewer plants are fertilized. And if there are no insects, the larger animals don't have the food they need. Author: ZDF/logo/Maral Bazargami/Jochen Schmidt Translation

SNiPs and their effect on body weight

Most SNiPs have no effect on body functions and health. However, some increase the risk of certain diseases or affect body weight. Author: ZDF/3sat/nano/docuvista/Thomas Hies/Andrea Schäfer/Marilena Schulte/Jörg Becker/Henry Müller/Jochen Schmidt Translation & dubbing: alugha Click here to watch