1) The national animal of Australia is the kangaroo.

2) The first smartphone, the IBM Simon, was introduced in 1992 and featured a touchscreen, email capabilities, and apps such as a calendar and calculator.

3) The New England Patriots and the Pittsburgh Steelers hold the record for the most Super Bowl wins, with six championships each.

4) The Earth's core is primarily composed of iron and nickel and is as hot as the surface of the sun.