The "artificial strawberry flavor" in a McDonald's milkshake is made up of around 45 chemicals.

On March 28, 1814, the funeral of Guillotin, the inventor and namesake of the infamous execution device, takes place outside of Paris.

It is no surprise that trucks take the top three spots.

PSYCHOLOGY: What fear is represented by the condition called "ablutophobia"?

In 1858, a brawl involving 50 congressmen broke out on the U.S. House floor. It ended when someone knocked off a man's wig, which was then accidentally put on backwards…

On March 17, 1601, the first parade honoring the Catholic feast day of St. Patrick, the patron saint of Ireland, is held in what is now St. Augustine, Florida.

The Grand Ole Opry is the oldest radio broadcast in US history. The “Opry” played a seminal role in the development of country music.

Just as colors are made more dramatic in sunsets on Earth, sunsets on Mars, according to NASA, would appear bluish to human observers watching from the red planet.

MOVIES: Which 2000 animated movie's tagline is "Escape or Die Frying"?

Walmart and Amazon are in the top three, of course.

On March 12, 1969, the London drug squad appears at house of Beatle George Harrison and his wife Pattie Boyd with a warrant and drug-sniffing canines.

Valentina hot sauce was named for the intrepid Valentina Ramirez Avitia, who at 17 posed as a man to join the Mexican Revolution.

Earth is a fast-moving spacecraft. We’re living in a big, fast-moving (really fast!) spacecraft.

Rome was famously built upon seven hills. Rome was said to have been founded when Romulus and Remus, twin sons of Mars, ended up at the foot of the hill Palatine and founded the city.

What are the names of the seven continents of the world?

The Vatican has its own telescope staffed by priests, and has even received awards for the pursuit of scientific research.

Snickers and Reese's Peanut Butter Cups top the list.

The Hula Hoop, a hip-swiveling toy that became a huge fad across America when it was first marketed by Wham-O in 1958, is patented.

A bored security guard at an art gallery in Ekaterinburg, Russia, lent his own artistic hand to an avant-garde painting by Anna Leporskaya…

Further on the subject of zombies, their fans are known as zombopiles…