1) Elvis Presley, often referred to as the "King of Rock and Roll," has sold over one billion records worldwide.

2) The global push for COVID-19 vaccination campaigns has been a significant focus, with the development and distribution of vaccines to combat the spread of the virus and protect public health.

3) The world's most expensive car is the Bugatti La Voiture Noire, which sold for over $18 million.

4) The development of the microprocessor by Intel in 1971 paved the way for the modern computer and led to the exponential growth of computing power.