1) The word "piano" contains three vowels: I, A, and O.

2) As of 2023, the COVID-19 pandemic continues to impact countries worldwide, with efforts focused on vaccination campaigns, public health measures, and economic recovery.

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

4) 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.