1) The Earth's core is hotter than the surface of the Sun.

2) The strongest natural material known to man is spider silk. It is stronger than steel and more flexible than nylon.

3) In African mythology, there is a rich tapestry of diverse beliefs and stories across the continent's many regions and cultures. It includes deities, spirits, and mythical creatures, with narratives often addressing themes of creation, ancestral heritage, and the forces of nature.

4) The Industrial Revolution, which began in the 18th century, brought about significant changes in agriculture, manufacturing, mining, and transportation.