The Romans plowed over the city of Carthage and sowed salt into the soil

Did the Romans really sow the lands of Carthage with salt?

Public transportation

Public transportation is an indispensable service in big cities. There are means of...

labor camp barracks

Several labor camps were established in the communist Eastern Bloc, the existence of which was...


The seven-spot ladybug is probably the most best-known of all the ladybirds. Its conspicuous...

Archimedes’ principle with gasses

Is there a difference between the weight of a plastic bottle filled with air and the weight of a...

The dangers of aluminum production

The use of bauxite, which is first processed into alumina and then into aluminum, can be harmful.

Paper airplane

Let’s make a paper airplane! How far can you throw it?

Air transportation

Air transportation has become the fastest and most reliable way of traveling. Thanks to air...


Since the advent of air travel, huge distances can be covered fast; today any part of the world...

Narrow-gage railway

Narrow-gage railways can be great fun on an excursion. As they chug along, they provide a great...

archeological excavation

In archeology, excavation is the exposure, processing and recording of archeological finds.

Air transportation

Air transportation has become the fastest, most reliable and most popular form of travel.

gray wolf

The domestication of the wolf began more than 10000 years ago. After humans, it is the most...

Sound localization

Sound localization is an important element in orientation. A sound reaches the ear closest to it...

Hungarian gray cattle

This gray, robust cattle breed with characteristic long and curved horns is indigenous to Hungary.

Rome (trailer)

Our new videos about the architecture and art of ancient Rome are already available.

Exceeding the speed of sound

What is the speed of sound? What happens when an object exceeds the speed of sound?

Home-made compass

This experiment shows how to make a home made compass.

Local time and standard time

Life could not work in this accelerated global world if we still used local times. Why, you ask?...

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