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Yuri Gagarin became the first human in space on 12 April 1961.
Ancient Egyptians worshipped a large number of gods and goddesses.
The heart is the central pump of the cardiovascular system beating several billion times over our lifetime.
The main parts of the human brain are the brain stem, the cerebellum, the diencephalon, and the cerebrum.
Massive accelerating or orbiting bodies cause ripples in spacetime. These are called gravitational waves.
This animation presents some animals and plants that lived between the Devonian and Permian periods (358–299 million years ago).
What happens in a liquid during evaporation and boiling? What does its boiling point depend on?
Carrier of genetic information in cells.
Connective tissues include loose and dense connective tissues, adipose tissue, blood, tendon and bone tissue.
The fortress-like palace was built by Roman Emperor Diocletian on the coast near his home town.
This animation explains the most important characteristics of waves through sound waves.
The first section of the gastrointestinal tract comprises the oral cavity, the pharynx and the oesophagus.
The skin is the soft outer covering of our body, its three layers are the epidermis, the dermis and the hypodermis.
Waves play an extremely important role in many areas of our lives.
The longest part of the digestive system, where most of the digestion and absorption takes place.
When producing sound, the vocal cords are vibrated by the air flowing out of the lung.
Several ingenious instruments have been invented over the centuries to help in navigating the seas.
The Panama Canal is an artificial waterway created to shorten shipping routes between the Pacific Ocean and the Atlantic Ocean.
Standing bodies of water can form in depressions on the surface by both endogenic and exogenic forces, as well as by human activity.
The central nervous system consists of the brain and the spinal cord, the peripheral nervous system consists of nerves and ganglia.