This animation shows why leap years are necessary. Without them, December would eventually drift into summer.

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earth in space with swirling clouds green and brown continents overlaid with giant calendar illustration showing February 29
Leap Day is coming up and its purpose is to keep our seasons in check.

Norman Kuring/NASA/GSFC/Suomi NPP; bgblue; Business Insider

Valentine's Day roses turn Miami, usually a freight desert, into trucking's busiest hot spot

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A U.S. Customs and Border Protection Agriculture Specialist inspects a bunch of red roses at Miami International Airport.
A U.S. Customs and Border Protection Agriculture Specialist inspects a bunch of red roses at Miami International Airport. Miami International Airport receives 91% of all flowers imported in the US.

Joe Raedle/Getty Images

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