01

The World's Tallest Building

  • The current tallest building in the world is the Burj Khalifa, located in Dubai, United Arab Emirates.
  • It stands at a height of 828 meters (2,716 feet) tall and has 163 floors.
  • The building took six years to construct and was completed in 2010.

02

Famous Inventors and Their Inventions

  • Nikola Tesla, a Serbian-American inventor, is credited with the invention of the AC (alternating current) electrical system.
  • Thomas Edison, an American inventor, is credited with the invention of the light bulb.
  • Alexander Graham Bell, a Scottish-born American inventor, is credited with the invention of the telephone.

03

Largest Deserts in the World

  • The Sahara Desert, located in Africa, is the largest hot desert in the world and covers an area of 9.2 million square kilometers (3.6 million square miles).
  • The Antarctic Desert, located in Antarctica, is the largest cold desert in the world and covers an area of 14 million square kilometers (5.4 million square miles).
  • The Arabian Desert, located in the Middle East, is the third-largest desert in the world and covers an area of 2.33 million square kilometers (900,000 square miles).