1) The most-watched television event in the United States is the Super Bowl, with millions of viewers tuning in each year.

2) Cyclones play a vital role in Earth's climate system by redistributing heat and moisture, maintaining global temperature patterns, and influencing weather patterns.

3) The national animal of Australia is the kangaroo.

4) The first commercially available digital camera, the Dycam Model 1, was introduced in 1990 and had a resolution of 376 x 240 pixels.