1) The total length of your blood vessels can circle the Earth more than twice.

2) The Super Bowl is the championship game of the National Football League (NFL) in the United States and is one of the most-watched television events each year.

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 concept of self-driving cars, or autonomous vehicles, is being actively developed by companies such as Tesla, Google (Waymo), and Uber.