🗣️
~7000 languages in the world
About 7000 languages exist on Earth. Half of them will disappear by the end of the 21st century — a language dies every two weeks. 23 languages are native to half of humanity. Linguistic diversity is humanity's priceless heritage.
Science
⚔️
7000 warriors — Terracotta Army
The Terracotta Army of China's first emperor Qin Shi Huang consists of about 7,000 clay warriors, horses, and chariots buried with him. Discovered in 1974, it became one of the greatest archaeological finds of the 20th century.
History
⚗️
7000 years of copper
Copper has been worked by humans for about 7,000 years — it is the oldest metal known to civilization. The Copper Age preceded the Bronze Age. Today copper is indispensable in electrical engineering: world production exceeds 20 million tonnes per year.
Science