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This video explains why the Barbary sheep on the savannahs bear such a strong resemblance to goats.
Pelicans are highly protected birds. They can be easily recognised by their pouched bill.
Groups of western jackdaws are frequently found in cities. Konrad Lorenz analysed the complex social behaviour of these animals.
The saker falcon is a large bird of prey widespread in Europe and and Asia.
Purifying a solution coloured with fuchsine dye with finely ground activated carbon granules and a filter.
Sound localisation is an important element in orientation. A sound reaches the ear closest to it first.
Certain species can only be found in one or two regions on Earth, as they would be unable to tolerate any drastic environmental changes. These are called stenotopic species.
Certain species spread out over a large area, almost throughout the globe. They are unaffected by changes in the environment; they are called eurytopic species.
Living organisms have different reactions to changes in the environment. We differentiate between stenotopic and eurytopic species accordingly.
Through mild physical exercise, even a trained body doubles the number of breaths it takes within a set amount of time.
Demonstrating a method to determine where exactly the blind spot is in our visual field.
Plants are capable of converting inorganic substances (carbon dioxide and water) into organic sugar.
Learn about the fig tree and its extraordinary fruit and find out about its medicinal properties as well.
An orthopaedic disease of the foot, in which the longitudinal arch of the foot, formed by the tarsal bones, collapses.
The poisonous bite of the Chilean recluse spider poses a serious threat to human health.
The red panda, also known as the lesser panda, is a relative of the black-and-white giant panda bear. Its home is the foothills of the Himalayas.
Why do camels have humps? Where do these extremely hardy animals live? Learn the answers from this video.
This video presents the large-scale farming of rose bushes.
In strong light the pupil contracts, while in low light it dilates.
A combination of fungal hyphae and algal cells viewed under a light microscope at a hundred times magnification.
A brightly coloured and extremely loud parrot whose screams can be as loud as 110 dB. In humans, long-term exposure to sounds of such intensity can cause hearing loss.
The jaguar, which catches its prey with one leap, is one of the most dangerous predators in South America.