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An Earth year isn't quite 365 days.

It really takes about 365.2422 days for the Earth to complete a full orbit around the Sun. Wait a minute—doesn't that mean that, every four years or so, we'll have an entire extra day? Yes! Every four years, we add an extra day to the calendar, February 29th, and the year becomes a leap year.

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Oops... Looks like you're on mobile

We're trying to get some mobile games up and running, but unfortunately our flash games don't work on phone or tablet. How about some hilarious science jokes instead?

Killer Sudoku

Killer sudoku is a mixture of sudoku and kakuro. It's just like sudoku, but... well, killer.


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