Remarkable civil engineering works to continue the Netherland's centuries-long fight against the sea.
Organs that detect signals of the environment or of the body and transmit them to the brain as nerve impulses.
Cossacks, members of independent semi-military communities, played an important role in the history of Ukraine.
A crystalline allotrope of carbon which was discovered at the end of the 1980s.
The axolotl, also known as Mexican salamander, is an amphibian species that keeps its gills even in adulthood.
A polynucleotid made up of phosphoric acid, ribose, and nucleobases (cytosine, uracil, adenine and guanine).
Today called Dubrovnik, this Croatian city is known for its spectacular architecture and beautiful location.
This animation presents the provinces and provincial capitals of the Netherlands.
Solid, white substance, a constituent of vegetable oils and animal fats.
A regular square pyramid is a right pyramid with a square base and four triangular faces.
This 3D scene explains the correlation between the ratio of similarity and the ratio of volume of geometric solids.
A presentation of the major administrative units of China.
This stunning castle is situated in northern Croatia.
The vacuum cleaner creates a partial vacuum and sucks up dust with the help of the incoming high-pressure air.
The development of mosses, ferns, gymnosperms and angiosperms is characterised by the alternation of generations.
Enzymes are protein molecules catalysing biochemical reactions. Their activity can be regulated.
This scene presents the location, anatomy and functioning of the central organ of the human circulatory system.
Frank Lloyd Wright's well-known work is a masterpiece of modern organic architecture.
This 3D scene presents the flora and fauna of the last period of the Palaeozoic Era.
This 3D scene presents the steps of the cement manufacturing process.