1) The process of impeachment involves charging a public official, such as a president or high-ranking government official, with misconduct and potentially removing them from office through a trial and vote by the legislature.

2) The highest-grossing film of all time is "Avengers: Endgame," which has earned over $2.79 billion at the global box office.

3) The Arctic Ocean is the smallest and shallowest ocean, located at the North Pole. It is covered by sea ice for much of the year.

4) The first video game console, the Magnavox Odyssey, was released in 1972 and featured games such as Pong and Table Tennis.