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Poison
Throughout history, humans have always tried to understand the mysterious power of toxins. In doing so, they sometimes discovered healing medicine, and sometimes lethal mixtures. This DVD treats the history and origin of poisons and their use by man. The most common and most dangerous known poisons are introduced. A journey into the body unveils the secrets of the deadly substances and shows how poisons work and why some kill slowly and painfully while others take effect suddenly and unexpectedly. Many plants and fungi produce life-threatening substances. But animal poisons are unparalleled in their effects. These ex- periments of nature also inspired human preparers of poison as well as healers. The most mysterious cases from history and nature could be re-opened. With the help of the new findings, new cures might be developed.
Learn moreLife along the River
Rivers are important ecosystems and habitats for plants and animals. The biodiversity of animals and plants in and on the water is enormous.
Learn moreCranes
They are counted among the most elegant and distinctive domestic birds. Due to their size, cranes can hardly be overlooked. Their call can be heard for miles. And: You hear them more and more often.
Learn moreLeben im Tropfen
In einem einzigen Wassertropfen kann reichhaltiges Leben sein: einzellige Tiere und Pflanzen, Algen, Bärtierchen, Würmer, Schneckeneier, Milben, Krebse. Die dreifurchige Wasserlinse lebt untergetaucht und passt in einen Wassertropfen - ein ideales Revier bei der Suche nach Kleinstlebewesen mit dem Mikroskop.
Learn moreDie 5 Sinne
Wie selbstverständlich sehen, hören, riechen, schmecken und fühlen wir. Jeder benutzt täglich seine fünf Sinne, ohne sie bewusst einzusetzen. "Schau dich schlau!" untersucht in dieser Sendung, warum sie für uns überlebenswichtig sind und wie sie funktionieren.
Learn moreConditioning
The theory of classical conditioning is one of several learning theories which explains how behaviours can result from stimulation without, however, taking into consideration the processes in the brain (black box).
Learn moreGenetics
Genetics means something like genealogy, origin and, in contemporary terminology, also the study of inheritance.
Learn moreAllergies
The flowering spring meadow, the cute cat from the neighbour’s garden or the bowl with strawberries are a source of joy to most people.
Learn moreLarge Herbivores
For a long time it was believed that, thousands of years ago, Central Europe was covered with almost uninterrupted primeval forests.
Learn moreEcosystem Forest
The forest – it is not only a collection of trees but a dynamic symbiosis of many different plants and animals. Their com- plex interdependence forms the basis of the ecosystem. DVD 1: Temperate Climes DVD 1 describes the structure and chain of aspects in the de- ciduous mixed forest typical of temperate climes. The various layers (herb layer, brush layer, canopy) are presented with their respective characteristics. The film describes the natural development of the ecosystem forest, compares natural forest and commercial forest and looks critically into human interference. DVD 2: Animals and Plants DVD 2 initially concentrates on the natural development of the forest (natural rejuvenation, succession, climax vege- tation). It then goes on to focus on the forest dwellers and their interrelations. The whole range of animals and plants is presented: from fungi and insects to birds and bats.
Learn moreDragonflies
The dragonfly – a fascinating hunter with incredible skills: with its iridescent wings, which make up two per cent of its body weight, it manoeuvres artistically in the air and serves as a model for ultra-lightweight design. A survival specialist that has been dwelling on earth for 320 million years.
Learn moreBlood
One moment of distraction and the damage is done: Tim has slipped and has scraped his knee. The wound begins to bleed. Back home, Tim is comforted by his mother and a plaster is put on the knee. Actually, this is not necessary any more because Tim’s body has already started to help itself by forming a scab on the wound. A skin injury makes it possible for germs and dirt to enter the body. To prevent this from happening our organism repels all foreign substances, beginning at the same time to close the wound. This is done with the help of blood clotting, which starts directly when blood gets into contact with the outside world for example.
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