1) DNA, the building block of life, can store incredible amounts of data. It is estimated that one gram of DNA could potentially store about 215 petabytes of data.

2) The Earth's core is primarily composed of iron and nickel and is as hot as the surface of the sun.

3) Banks play a vital role in the economy by facilitating the flow of funds between savers and borrowers, providing loans, and offering various financial services.

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