1) The world's oldest known recipe is for beer and is over 4,000 years old.

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 ocean is home to an incredible variety of marine life, including thousands of species of fish, mammals, reptiles, and invertebrates.

4) Lightning strikes the Earth about 8 million times a day.