Giraffe species and distribution

In the 18th century, giraffes were widespread in sub-Saharan Africa. In the meantime, their habitat has shrunk considerably. Until 2016, only one species with nine subspecies was known. DNA tests, however, prove that there are four different species. Author: ZDF/Terra X/R.Marel/C.Gerisch/SpiegelTV/Jochen Schmidt Translation and dubbing: alugha Click here to see more videos: https://alugha.com/TerraX

LicenseCreative Commons Attribution-ShareAlike

More videos by this producer

What is political immunity?

Politicians in the German Bundestag are under special protection: political immunity. This means, for example, that the police can't investigate them. But why does this protection exist? Authors: ZDF/logo/Simone Klein/Renate Becker, Heidi Stifel Translation and dubbing: alugha Click here to see m

Regenerative phase of an inflammation

In the regenerative phase, inflammation-resolving messenger substances are released. Macrophages of type M2 dispose of cell and tissue debris. At the same time, other immune cells begin the first repair measures. Author: 3sat/nano/DOCUVISTA Filmproduktion/Marilena Schulte,Maike Wurtscheid/Jörg Beck

Development phase of an inflammation

If a foreign body penetrates the skin, phagocytes in the damaged tissue are the first to react. So-called M1-type macrophages release pro-inflammatory messenger substances. These include prostaglandins. These hormones trigger a pain stimulus. Author: 3sat/nano/DOCUVISTA Filmproduktion/Marilena Schu