1) The first smartphone, the IBM Simon, was introduced in 1992 and featured a touchscreen, email capabilities, and apps such as a calendar and calculator.

2) In Hindu mythology, the Trimurti consists of the three major gods: Brahma (the creator), Vishnu (the preserver), and Shiva (the destroyer). They represent the cycles of creation, preservation, and destruction, respectively, and together embody the cosmic forces that shape the universe.

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

4) The world's largest volcano, Mauna Loa in Hawaii, is also one of the most active.