A college student in 1979 only had to work about 182 hours per year in order to pay for tuition. The average student in 2013 had to work over 991.

You can determine the temperature outside by counting the chirps made by crickets. According to The Farmer’s Almanac, to convert the cricket chirps to Celsius, you count the number of chirps in 25 seconds, divide by 3, then add 4 to get the temperature.

In 2010, Mattel made and sold Wonder Woman’s invisible jet as a collectible. The package was an empty plastic shell with nothing inside and the packaging had weights to give the illusion that there was actually something inside, and people bought this.

In 2013, a bank worker in Germany fell asleep on his keyboard’s number-two button causing him to transfer 222,222,222 euros on a transfer that should have been worth only 62 euros. Interestingly, his coworker was the one fired for not spotting the error.