1) Insurance premiums are the payments made by policyholders to insurance companies in exchange for coverage.

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 first computer mouse was invented by Douglas Engelbart in 1964 and consisted of a wooden shell and two metal wheels.