The Chicago River was dyed green for St. Patrick's Day Saturday in a fan favorite event. This video shows how it all happened - in under 30 seconds.

Chicago’s river-dyeing tradition began in 1962, though the exact genesis of the idea is a bit murky. Most versions lead back to the sponsor of the St. Patrick’s Day parade — the Plumbers Union.

Everyone can be Irish on St. Paddy's Day, especially with a green drink in hand. From cocktails to mocktails to beer, you'll find the right way to celebrate.

Maybe, just maybe, the real reason Ireland is so green is that the leprechauns tend the fields in secret. After all, they have to keep things looking beautiful for all the rainbows that land here!