Navigational instruments of the past

Several ingenious instruments have been invented over the centuries to help in navigating the seas.

Circus Maximus (Rome)

The ancient Roman arena became well-known for the chariot races held here.

The development of lakes

Standing bodies of water can form in depressions on the surface by both endogenic and exogenic forces, as well as by human activity.

The spread of Homo sapiens on Earth

The 'wise man' originated in Africa and dispersed throughout most of the continents.

Liuhe Pagoda (Hangzhou, 12th century)

The Buddhist pagoda of the six Harmonies is located in China, by the River Qiantang.

Transport processes

This animation explains active and passive transport processes occurring through cell membranes

Layers of the ocean

Physical properties, as well as the flora and fauna of the ocean change with depth.

Darwin's legendary voyage

Darwin's legendary voyage aboard HMS Beagle played a crucial role in the development of the Theory of Evolution.

Lesser horseshoe bat

Bats use ultrasound to navigate and hunt for prey.

Greek gods

The Olympian gods in ancient Greek mythology were as diverse as humans.

Rivers and landforms

Rivers play an important role in shaping the Earth's surface: they cause erosion as well as carrying and depositing sediment.

Photosynthesis

Plants are capable of converting inorganic substances (carbon dioxide and water) into organic sugar.

Construction of cars

This animations demonstrates the exterior and interior construction of cars, as well as their operation.

BR Standard Class 3 2-6-2T steam locomotive

A type of steam locomotives used by British Railways were manufactured in the 1950s.

Layers of forests

The layers of different types of forests may vary.

Veiled chameleon

Chameleons are reptiles with an ability to change their colors.

Traditional Japanese house (Machiya)

The animation shows the traditional Japanese wooden townhouse, the machiya.

The life-cycle of the Solar System

The formation of the Sun and the planets started with the contraction of a dust cloud about 4.5 billion years ago.

Scale exercises

An interesting logical exercise: you have many weights that look the same, you have to find the only one that is different.

Amino acids

Amino acids are the monomers of proteins.

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