We see them all the time on movie out-takes, but what's the actual purpose of the clapperboard (sometimes called a slate), and why is it clapped together? The main function of a clapper board is to allow the video and audio, which are recorded separately, to be synced during editing. The "clap" noise registers on the audio recording and which can then be timed to match the physical closure of the clapperboard on film, insuring the rest of the take is synced.

A childhood wouldn't be complete without at least one encounter with a Ouija Board. Our skepticism for it makes any messages from supposed spirits seem laughable, after all, how can a commercial board game be a portal to another dimension? Originally referred to as a talking board, the first example is dated to 540 B.C. and it was far removed from the entertaining game it is today.

Many underhanded people try their hand at fraud, but to be so well known for it that a form of it is named after you takes a special person: meet Charles Ponzi, of the original Ponzi scheme. The roots of his scheme started off honest enough. Ponzi discovered an arbitrage opportunity with international postal reply coupons. The idea was completely legal, but things took a turn for the worst after investors were suckered into investing with a promised 50% return.

Ever wonder what happens to ripped bank notes or dented coins? Everyday the US destroys approximately 5 million unfit bills which adds up to 7,000 tons of material a year. The reasons for their destruction range from simply wearing out to being contaminated with a hazardous substance. Roughly 45% of all notes replaced are $1 bills, which have a life expectancy of 21 months. Other denominations remain in circulation longer. A $100 bill usually lasts seven years.

At some point in their life most people have made the mistake of brushing their teeth in the morning and following it up with a glass of fresh orange juice for their daily dose of Vitamin C. Assuming you’ve made that mistake, there's no reason to explain anymore. But if you've somehow gone through life without making that grave mistake: congratulations. The taste is vile. The reason for this is a simple lesson in chemistry, and the effect of Sodium Laureth Sulfate on our taste buds.