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?

labor camp barracks

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

Ladybug

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

Air transportation

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

airplane

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

gray wolf

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

Air transportation

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

The dangers of aluminum production

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

Public transportation

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

Sound localization

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

Paper airplane

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

Narrow-gage railway

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

Archimedes’ principle with gasses

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

Hungarian gray cattle

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

archeological excavation

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

Cosmic calendar

If we compressed all the time that has ever passed into a year, how would the history...

Beyond the lightbulb and the electric outlet

Have you ever given any thought to the origins of the energy your computer or TV uses?

What is the resolution of the human eye?

Is the resolution of our eye comparable to that of today’s top quality films? What is...

Home-made compass

This experiment shows how to make a home made compass.

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