An average Egyptian dwelling consisted of regularly arranged rooms.
The Giza Necropolis is the only one of the Ancient wonders still intact.
The train operates between Paris and southern Germany, its cruise speed is 320 km/h (199 mph).
Machines converting the energy of wind into useful forms of power were already in use in the Middle Ages.
The inner planets of the Solar System are terrestrial planets while the outer planets are gas giants.
Comets are spectacular celestial bodies orbiting the Sun.
A selection of legendary buildings from the history of civilisation.
Chameleons are reptiles with an ability to change their colors.
Ancient Egyptians worshiped a large number of gods and goddesses.
The Suez Canal is an artificial waterway connecting the Red Sea and the Mediterranean Sea.
Human bones are joined together by cartilaginous or synovial joints, sutures or they can fuse together.
This animation demonstrates how a turbojet engine works.
The ancient city of Babylon was built on the banks of the Euphrates River in Mesopotamia.
Remarkable civil engineering works to continue the Netherland's centuries-long fight against the sea.
Eupteryds are an extinct group of Paleozoic aquatic arthropods.
The zygote is the initial cell formed when two gamete cells are joined by means of sexual reproduction.
Today called Dubrovnik, this Croatian city is known for its spectacular architecture and beautiful location.
A fjord is a long, narrow inlet with steep sides, created in a valley carved by glacial activity.
There are two basic cell types: prokaryotic and eukaryotic cells.
The adrenal glands are responsible for maintaining homeostasis and producing a rapid response in stressful situations.