People live in different types of settlements. As the population grows, the range of services available for the residents widens as well.
This class in the animal kingdom has the highest number of species. More than half of all known animal species, (more than 1 million) belong here.
Mosses are plants that can be found all over the world. It is an interesting fact that even after 400 years they are able to revive as soon as sunlight reaches them.
Most species of sedges grow in swamps, wetlands and other watery places where they usually dominate the flora.
Fog is a shallow layer of cloud close to ground level. When it descends, visibility drops drastically and road traffic may come to a standstill.
The continental climate zone is characterised by four seasons: hot summer, cold winter and two transitional seasons in between.
Mayflies or shadflies are insects whose larval stage usually lasts 1-3 years, which they spend in freshwater.
In vascular plants, the root is the organ that typically lies below the surface of the soil. However, roots can also be aerial or aerating.
Tree's annual rings tell a great deal about their history. They help to determine their age, and preserve signs of air pollution, acid rain or even landslides.
The best known cartilaginous fish, sharks, do not chew their food; they use their razor-sharp teeth only for biting and tearing.
The fossils found around the globe show that birds evolved during the Jurassic era from theropod dinosaurs.
Let’s have a quick look how a maize kernel sprouts. This video compacts almost 10 days into a few seconds.
The carnation is considered as the national flower of Spain. Let's see how the flower develops.
You can always find earthworms in humid soil with sufficient humus content.
Subarctic climate regions are very close to the Arctic. Population is very sparse here, and vegetation consists only of some lichens and a few other plants.
Watch what the life in a small town in Iceland, the land of fire and ice, looks like.
An alternative source of energy used mainly for heating purposes; its exploitation is most economical in tectonically more active areas.
Iceland is one of the least populated countries. However, few countries can compete with the richness of its natural heritage.
Certain sections of coast are battered by extremely destructive waves. Let’s take a look at this process.
Shipping is the most ancient way of transport. It is still significant today and is most popular mainly in the fields of cargo transport and tourism.
Geothermal eruptions sometimes form lakes. In certain lakes the temperature can reach 100 °C.
Have you heard of the famous battle of Thermopylae, where a handful of Greek warriors held back thousands of Persian soldiers?
Ravens are considered the most intelligent birds, displaying high learning ability and use of logic in solving problems.
The southern three-banded armadillo is one of the very few species of armadillos capable of rolling into a complete ball to defend themselves.