1) The shortest scheduled commercial flight lasts just 1.7 miles and connects two Scottish islands, Westray and Papa Westray.

2) Many mountains have cultural and spiritual significance for local communities and are often considered sacred or revered in religious traditions.

3) The concept of gravity was famously described by Sir Isaac Newton after an apple fell on his head.

4) The concept of virtual reality (VR) involves creating a simulated environment that can be explored and interacted with using specialized headsets and input devices.