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THE KNOWLEDGE FEED

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How Do Skyscrapers Keep Getting Taller?

Burj Khalifa in Dubai is the tallest skyscraper in the world, rising 2,717 feet. That’s twice as high as the Empire State Building. How can buildings stretch so high without toppling over?

LeVar Burton Reads "'Twas the Night Before Christmas"

Jason English

Listen to our new best friend LeVar Burton read "'Twas the Night Before Christmas" from the Reading Rainbow iPad app.

The Johnny Cash Christmas Show from 1977

Chris Higgins

Can Opera Singers Shatter Glass?

Yes! But it isn’t easy. (And you don’t need to be an opera singer to do it. All you need is a good ear and powerful pipes.)

32 Vintage Photos of People Having a Merry Christmas

Erin McCarthy

Christmas through the years.

World War I Centennial: France Sends Anti-German Ambassador to Russia

Erik Sass

A Few Facts about 4 More Classic Holiday TV Specials

Kara Kovalchik

How many of these shows do you remember, or maybe still watch every year?

Scientists Recreate Dreams With YouTube Videos

DeAnna Kerley

Mind reading used to belong to the realms of sci-fi books and comic strips.

9 Holiday Characters From Around the World

Ethan Trex

Most American four-year-olds can tell you all about beloved Christmas characters like Santa Claus and Frosty the Snowman.

Cubli: A Balancing, Walking Cube

Chris Higgins

6 Not-So-Jolly Christmas Carols

Danny Gallagher

There are some Christmas songs that don't get a lot of attention because they're dark, even by non-holiday song standards.

Morning Cup of Links: All About Reindeer

Miss Cellania

3 Interesting Articles from Ernest Hemingway’s Newspaper Career

Lucas Reilly

Before Ernest Hemingway was a literary giant, he was a cub reporter.

Weekend Links: Christmas Movie Edition

Roma Panganiban

All the Yule Logs You Can Stream

Chris Higgins

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