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The legendary ruler and military leader, Alexander the Great, established a vast empire.
This animation presents the states and state capitals of Germany
The Arctic tern is famous for its long migration route: it flies from the Arctic to the Antarctic and back again each year.
Cosmopolitan monocots inhabiting watersides.
A geisha is a traditional Japanese entertainer whose skills include performing classical music and dance.
This animation demonstrates the process of star development for average and massive stars.
The Tesla Model S is one of the first commercially available electric cars.
It is a well-known phenomenon that the sound of an approaching sound source is higher than that of a receding one.
The Rosetta Stone helped to solve the mystery of hieroglyphics.
Wind, as an external force, plays an important role in shaping coastal areas and steppes.
The dodo is an extinct species of birds that used to be native to the island of Mauritius. It has become the symbol of extinction.
The Kepler space telescope was launched by NASA to discover Earth-like planets orbiting other stars
The Vought F4U Corsair radial-engined naval fighter was one of the most prominent American aircraft of the Second World War.
This Neoclassical structure is one of the best-known landmarks of Berlin and Germany.
This animation demonstrates how muscles and vertebrae move the head.
Radial engines are used primarily in aeroplanes and helicopters.
This animation presents levels of biological organisation from the level of the individual organism to the level of cells.
Adrenaline, also known as epinephrine, is a hormone produced in our body in stressful situations and plays an important role in the fight-or-flight response.
The dromedary is an indispensable animal for inhabitants of the deserts.
The inability to differentiate certain shades of colour is called colour vision deficiency.