情人節消費指數顯示美國人平均消費上千元

　　2月17日CNN聽力：戀人節花費指數表現美國人均勻花費上千元

　　戀人節花費指數表現美國人均勻花費上千元 英國宇航員從太空拍下非常罕有地球閃電視頻英國宇航員從太空拍下非常罕有地球閃電視頻

　　Maybe you can name all the U.S. presidents.

　　But do you know who is honored by Presidents Day?

　　You could have asked Calvin Coolidge, but he mighthave been silent on the matter.

　　Teddy Roosevelt might have walked softly aroundthe subject, despite being a rough writer.

　　Most Americans believe Presidents Day is aboutevery president we've had.

　　But that's kind of wrong, at least as far as its origin goes.

　　Presidents Day was originally Washington's birthday, just Washington's, on February 22nd.

　　It became a federal holiday in 1885, and as far as the U.S government's concerned, it's stillWashington's birthday, not Presidents Day.

　　In 1968, Congress voted to switch it to the third Monday in February, giving governmentemployees a three day weekend.

　　But even though Washington's birthday and Lincoln's birthday were only days apart, Congressrefused to combine them in the Presidents Day, though that's what many Americans do.

　　So, if you work for the government, you'll get a day off for Washington's birthday.

　　If you don't, you may get a day off for Presidents Day.

　　Those, after all, are the precedents.

　　Cupids and candy hearts, this weekend's not just about Presidents Day.

　　Here are five facts about Valentine's Day, which is Sunday.

　　First, it's namesake.

　　Historians don't know for certain but the holiday is believed to be named after a Christianpriest who was martyred in the third century, though there were several people namedValentine.

　　Second, it wasn't until the 1300s that romance and Valentine's Day got together, leading to thetraditions we love.

　　More than 54 percent of Americans are expected to celebrate.

　　And how about the cards?

　　Commercially printed Valentines appeared in the U.S. in the 1800s, though Europeans wereexchanging them at least 100 years before that.

　　Now, every year, 150 million cards and gifts are sent in the U.S.

　　And when we say gifts, we mean millions of heart-shaped boxes of chocolates, hundreds ofmillions of roses.

　　This is the number one holiday for U.S. florists.

　　And since gifts cost moolah, the National Retail Federation expects about $19 billion will bespent this year.

　　Men traditionally spend more, about twice as much in the holiday as women.

　　But true love is priceless.

　　Well, they say love at first sight is like being struck by a bolt of lightning.

　　Turns out, that happens a lot.

　　The lightning strikes, not the love thing-well, maybe the love thing, but what you see here islightning.

　　It's a from a British astronaut aboard the International Space Station about 250 miles abovethe earth, about 100 lightning bolts hit the earth every second.

　　This is how that looks in a time lapse video shot over North Africa, Turkey and Russia.

　　It's a striking sight, the like of lightning, a lighting likely lightening the night with brightdelight, so enlightening.

　　We hope you have light-hearted and fun Valentine's weekend.

　　We'll have a more news for you Tuesday, and we'd love to see y'all then.

　　I'm Carl Azuz for CNN STUDENT NEWS.

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