1) Michael Jackson's album "Thriller" is the best-selling album of all time, with estimated sales of over 66 million copies worldwide.

2) The first successful mass-produced personal computer, the IBM PC, was introduced in 1981 and played a significant role in popularizing the use of computers in homes and offices.

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

4) Cyclones can cause widespread damage through high winds, heavy rainfall, and flooding. They can also generate tornadoes and trigger landslides.