The Insides of These Everyday Objects Are Totally Unexpected

A Submarine Torpedo Chamber

Who wants to dive under the sea? Word of advice, don't go underwater with only a half of a submarine. Sure, it might look super cool and impressive from this angle, but under the sea, things would not be so great. The only half sub you should be considered about is the sandwich kind.

The More You Know

It costs the U.S. Mint almost twice as much to mint each penny and nickel as the coins are actually worth. Taxpayers lost over $100 million in 2013 just through the coins being made.
The population of the United States increases by one person every 12 seconds.
Dueling is legal in Paraguay, as long as both parties have been registered as blood donors.
Saint Patrick's Day began as a "feast day". To honor him, Christians could put aside their Lenten restrictions on food and alcohol consumption, which is why excessive drinking has become linked to the celebration.

Post originally appeared on Upbeat News.