Humans have 4 types of teeth: incisors, canines, premolars and molars.
The Wright Flyer was the first successful powered, heavier-than-air aircraft, designed and built by the Wright brothers.
Bones of the upper limbs form the pectoral girdle and the arms.
This animation shows the characteristics of domestic light sources, from traditional light bulbs to LED lights.
An earthquake is one of the most devastating natural phenomena.
In loudspeakers sound waves are generated by electromagnetic induction.
Seawater, as an external force, plays an important role in shaping coastlines.
This bizarre-looking fish uses its bioluminescent lure to catch its prey. The animation explains how it works.
The ancient Inca city, located in present-day Peru, is a World Heritage Site.
The Cassini spacecraft was exploring Saturn and its moons for nearly 20 years.
Systemic circulation carries oxygenated blood from the heart to the body, while pulmonary circulation carries oxygenated blood from the lungs to the heart.
The ´Temple of all gods´ was built during the reign of the Roman Emperor Hadrian.
Spanish conquerors owed their success to their armour and firearms.
Concave and convex lenses are used for the correction of short-sightedness and far-sightedness.
Scoliosis is a medical condition in which a person's spine has a lateral deviation.
A ray of light is reflected or refracted at the boundary of two mediums with different refractive indices.
This animation explains the technology of shale gas extraction.
Polynesians travelled huge distances with their specially designed boats.
A fuel cell provides environment-friendly electric energy produced by the chemical reaction between oxygen and hydrogen.
The animation offers a summary of the history of aviation from the Middle Ages.