There are unanswered questions.

Serial killers are statistically rarer than pop culture suggests — the FBI reports fewer than 50 active at any time in the US.

You are more likely to share your birthday with someone than not in large gatherings.

You are more likely to die taking a selfie than winning the lottery.

The U.S. dollar is the most traded currency in the world, involved in about 88% of all foreign exchange transactions.

The average person will spend six months of their life waiting for red lights to turn green.

Synchronized swimming, now called artistic swimming, requires athletes to hold their breath for up to 3 minutes while performing choreography.

You are more likely to become a millionaire than win many major lotteries.

About 150,000 people die worldwide every day.