Search results for “ZDF”

The most important climate factors

How sun, clouds, CO2 and other factors determine the climate. The video clip was created in collaboration with meteorologist Prof. Dr. Stephan Borrmann, Professor at the Johannes Gutenberg University Mainz and Scientific Member at the Max Planck Institute for Chemistry, and climate scientist Dr. Di

What is the Wallace Line?

In the island world of Southeast Asia, the animal worlds seem strangely separated. How come? In the 19th century, naturalist Alfred Russel Wallace had a theory. Source: https://www.zdf.de/dokumentation/terra-x/was-ist-die-wallace-linie-creative-commons-clip-100.html https://www.zdf.de/dokumentati

Endangered lion populations

Lions play an important role in the ecological balance in their habitats. This was already the case two million years ago. In the meantime, many populations are threatened with extinction. The situation is particularly critical in West and Central Africa. https://www.zdf.de/dokumentation/terra-x/b

Volcanism in the Andes

The volcanoes of the Andes are particularly explosive. The oceanic plate that dips below the continental one contains a lot of water. The water evaporates in the glowing magma. High pressure is created, which discharges at the Earth's surface in massive volcanoes. Source: https://www.zdf.de/dokumen

Dogs in ancient Rome

Lap dogs were probably showered with luxury and pampered as never before in history. But not all Romans wanted these little dogs. Hunting dogs were common as well: greyhounds, bloodhounds or massive Molossians. Source: https://www.zdf.de/dokumentation/terra-x/hunde-im-antiken-rom-creative-commons-

What do local politicians do?

Laws for Germany are passed in the Bundestag. Local politicians primarily manage the money of their municipality. For example, they can decide whether a new playground should be built in the municipality or how many buses should run. Source: https://www.zdf.de/dokumentation/terra-x/kommunalpolitike

The hunting secret of the lacewing

Pearl lacewings lay their eggs near termite burrows. Once the larvae have hatched, they sneak into the burrow. If a larva encounters termites there, it swings the tip of its rear end to head height of its victims and farts. Source: https://www.zdf.de/dokumentation/terra-x/das-jagdgeheimnis-der-flo

Photosynthesis of trees

With photosynthesis, trees master one of the most important biological processes in the world. With the help of their leaves and the pigment chlorophyll, they produce their own nutrition with just three ingredients, while still producing fresh oxygen. https://www.zdf.de/dokumentation/terra-x/die-fo

Anatomy of the clitoris

The clitoris is part of the female genital. Only the glans clitoris is visible. Most of the organ is located inside the pelvis. https://www.zdf.de/dokumentation/terra-x/anatomie-der-klitoris-creative-commons-clip-100.html URL to full docu: https://www.zdf.de/dokumentation/3sat-wissenschaftdoku/vu

Anatomy of vulva and vagina

The entire externally visible female genitalia is called the vulva. The internal vagina connects the vulva to the cervix and uterus. Source: https://www.zdf.de/dokumentation/terra-x/anatomie-von-vulva-und-vagina-creative-commons-clip-100.html URL to full doc: https://www.zdf.de/dokumentation/3sat

When did racism start?

Racist thinking is probably as old as mankind. With Columbus and the colonization of Africa and South America over 500 years ago, racism entered the world stage. However, the term "racism" was not coined until the late 19th century. Source: https://www.zdf.de/dokumentation/terra-x/seit-wann-gibt-es