Oxygen carrier protein in our red blood cells.
The Crow are Native Americans who inhabited the Yellowstone River valley.
The United States entered World War II after the devastating attack by the Japanese navy.
The Hypothalamic-pituitary axis is the regulating centre of our endocrine system.
Axit fomic là dạng axit cacboxylic đơn giản nhất.
Phân chia không gian bằng ba mặt phẳng cắt nhau theo nhiều cách sắp xếp khác.
Trolleybuses and trams are environment-friendly means of public transport
Highly committed Japanese soldiers fought primarily at the Asian and Pacific theatres of the Second World War.
Tower cranes are machines used for lifting loads weighing up to several tonnes.
Medieval Venice owed its wealth to its flourishing maritime trade.
This animation presents the provinces and provincial capitals of the Netherlands.
The German liquid-propellant rocket, developed during WWII, was the first known man-made object to reach space.
Today called Dubrovnik, this Croatian city is known for its spectacular architecture and beautiful location.
The device designed to carry out executions more humanely than before was named after a French doctor.
Jamestown, founded in 1607, was the first permanent English settlement on the east coast of North America.
Typical working-class districts with unhealthy living conditions were built at the time of the Industrial Revolution.
A wide variety of torture devices were in use in medieval dungeons.
These excellent shipbuilders and sailors travelled great distances on the seas and rivers.
The cannon was an important type of firearms at the beginning of modern history, widespread both on land and water.
The work of smiths – one of the first professions in history – became even more important in the Middle Ages.