Cục máu đông hình thành tại tĩnh mạch sâu của chi dưới có thể gây thuyên tắc phổi dẫn tới tử vong nếu chúng di chuyển đến phổi.
Numerous legendary empires were built (and destroyed) in the course of history.
Numerous legendary empires were built (and destroyed) in the course of history.
The legendary Mongol ruler Genghis Khan established a huge empire through his conquests.
Numerous legendary empires were built (and destroyed) in the course of history.
The animation offers a summary of the history of aviation from the Middle Ages.
The aircraft manufactured by the British de Haviland company was the world's first mass-produced commercial jetliner.
Eurypterids are an extinct group of Palaeozoic aquatic arthropods.
Video mô phỏng về những dãy núi, đồng bằng, con sông, hồ, và hoang mạt lớn nhất trên Trái Đất.
This animation presents the history of Ancient Rome throughout the centuries.
The legendary ruler and military leader, Alexander the Great, established a vast empire.
The Pula Arena, located in present-day Croatia, was one of the largest Roman amphitheatres in the Antiquity.
This stunning castle is situated in northern Croatia.
Modern Slavs live in 14 European countries that can be classified into 3 groups.
Một trong những loài cây phổ biến nhất của họ cây Thông, là loài bản địa ở Lục địa Á-Âu.
The axolotl, also known as Mexican salamander, is an amphibian species that keeps its gills even in adulthood.
This 3D scene explains the correlation between the ratio of similarity and the ratio of volume of geometric solids.