Search results for “ZDF”

Why Don’t Sleeping Birds Fall Off Branches?

When a bird lands on a branch, it bends its legs, tightening the tendons and curling its toes around the branch. The deeper it squats, the tighter its grip becomes. Authors: ZDF/3sat/nano/Autorenkombinat/Holger Barthel und Daniel Beißmann/Markus Wohn/Maximilian Heß Translation and dubbing: alugha

What Causes the Halo Phenomenon?

When ice crystals at high altitudes in cirrus clouds refract sunlight, a halo appears. But a classic halo is only visible when the light exits at an angle of 22 degrees. Autor: ZDF/Terra Xpress/Autorenkombinat/Birthe Heer/Sebastian Kerz/Tobias Schönke/Maximilian Heß Translation and dubbing: alugha

Feudalism in the Middle Ages

Medieval society was built on the feudal system. Lords granted their land, while vassals pledged loyalty in return. The famous feudal pyramid illustrates the rigid hierarchies of the time. Authors: ZDF/Terra X/G. Graffe/C. Moroni/Gruppe 5/Maximilian Heß Translation and dubbing: alugha Click here

Endogenous Cannabinoids

When there is a chemical imbalance in the body, such as during stress, endocannabinoids are released. They bind to the matching receptors, regulating the activity of the nerve cells. This allows the body to counteract the imbalance. Authors: ZDF/Terra X/J. v. Kalkreuth/M. Richter-Jähring/D. da Cruz

Cows: The Methane Culprits

In agriculture, methane is primarily produced by ruminants during digestion and from the storage and spreading of slurry. Cows, in particular, are often blamed for climate change. But why do cattle produce a gas that harms the climate? Authors: ZDF/Terra X/GO! Film/Florian Fiedler/A. Plascher/Lisa

Natural Landscape of North America

Europe could fit twice into North America. This cultural region includes Canada and the USA. The natural landscape is defined by five major regions. From the tropics to polar regions, all climate zones are represented. Authors: ZDF/Terra X/Susanne Hillmann/Iris Gesang/Spiegel TV/Maximilian Mohr Tr

The Superpowers of Eucalyptus Trees

The Australian eucalyptus is a true wonder tree. It is hardy, undemanding, and delivers record yields: up to 24 tons of wood per hectare per year, three times as much as a Central European deciduous forest. Authors: ZDF/Terra X/S. Armsen/Marc Trompetter/Maximilian Heß Translation and dubbing: alug

Mold in the Home

Mold is a microorganism that forms a typical fungal network. It mainly reproduces through spores. The slightest breeze carries these spores everywhere, which is how they end up in our homes. Here, they usually find ideal conditions. Authors: ZDF/3sat/nano/Autorenkombinat/Josephine Blume, Holger Bar

The Trabant, the Iconic Car of East Germany

The Trabant is a product of the 1950s. Like any other car of its time, its chassis is made of sheet steel. What’s unique are its plastic parts made of Duroplast instead of the usual sheet metal, an innovation born out of necessity. Authors: ZDF/Terra X/Dr. Friedrich Scherer/Kawom!/Wolfgang Morell/M

Intelligent Birds

Birds have much smaller brains than humans. They also lack the cerebral cortex, where human thinking takes place. However, the density of neurons in a bird's brain is higher. In other words, birds pack more brainpower into less space. Authors: ZDF/Terra X/N. Bergenthal/O. Roetz/WENDEVARGA/Maximilia

How can temperature be defined?

Atoms and molecules are always in motion. Temperature reflects how intensely they move. The faster they move, the hotter it gets, and vice versa, right down to absolute zero, where everything stops. To define temperature, there are different scales. Authors: ZDF/TerraX plus/Bilderfest/Paul Grumer/M