1) The World Wide Web, developed by Tim Berners-Lee in 1989, revolutionized the way information is accessed and shared on the internet.

2) The Great Wall of China is not visible from space without aid, contrary to popular belief.

3) Mount Kilimanjaro in Tanzania is the highest mountain in Africa and attracts climbers from around the world.

4) The concept of compound interest can be attributed to the ancient Babylonians, who used it in their banking practices.