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Channel: Robert Krulwich
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When Snails Lose Their Way

http://www.youtube.com/watch?v=UkSN-kqAmxwhttp://www.youtube.com/watch?v=BW-tzEKwD7g

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If You're Born In The Sky, What's Your Nationality? An Airplane Puzzler

Here's a puzzle I bet you've never pondered.Imagine you are very, very pregnant. For the purposes of this mind game, you are a married American woman (with an American spouse) and you are about to...

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When Venus Was Filled With Venusians — 50 Billion Of Them

What a difference 180 years makes.Back in the 1830s, a Scottish minister and amateur astronomer named Thomas Dick tried to calculate the number of intelligent creatures in the universe. He assumed that...

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Roadways You Can Install Like Throw Rugs

http://www.youtube.com/watch?v=TiCLMePjK-Y

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Glenn Gould In Rapture

http://www.youtube.com/watch?v=qB76jxBq_gQ

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Building Me: A Puzzlement

It's a puzzle — the deepest puzzle I know. The question is: What are we?One answer, from physicist-novelist Alan Lightman, is we are stuff. Just stuff."Let me explain. A highly unpleasant idea, but one...

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Mapping What You Cannot See, Cannot Know, Cannot Visit

http://www.youtube.com/watch?v=rENyyRwxpHo

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Souls Tumbling In The Light

http://www.youtube.com/watch?v=sGQ2msn0OR0

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What Makes A Star Starry? Is It Me?

http://www.youtube.com/watch?v=VVAKFJ8VVp4

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Howling Babies Drove Prehistoric Warriors Into Battle?

http://www.youtube.com/watch?v=Zm-sQnazFAQ

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'Murdersquishing' Them To Death: How Little Bees Take On Enormous Hornets

I know, I know. You have Putin to worry about, ISIS to worry about, Britain's near breaking, Washington's broken, and the globe keeps getting warmer — so why bring up Japanese giant hornets? You have...

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2 Ways To Think About Nothing, One Mo' Time

http://www.youtube.com/watch?v=tpCWh3IFtDQ

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Is That A Lark I Hear? A Nightingale? Surprise! It's A Bat

Bats produce "pings" or "clicks," right? They make these high-pitched sounds, too high for us to hear, but when their cries ricochet off distant objects, the echoes tell them there's a house over...

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What's Better Than A Total Eclipse Of The Sun? Check This

http://www.youtube.com/watch?v=OyZoD7BRTtg Any eclipse is worth seeing. A total eclipse — where the moon completely blots out the sun, where day turns to night, where solar flares ring the moon's...

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An Animal Makes A $10,000 Deposit, But Not At The Bank

Editor's note: We've added an update at the bottom of this post with results of the auction. Read on! It's a highly specialized category to be sure: "Longest." But that's what the auctioneer is...

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Where The Birds Are Is Not Where You'd Think

This is a trick question. Where would you expect to find the greatest variety of birds? Downtown, in a city? Or far, far from downtown — in the fields, forests, mountains, where people are scarce? Or...

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Guess Who's Been Waiting In The Lobby For A Hundred Million Years?

Sometimes the quiet ones surprise us. Take moss — those fuzzy green pads you see on the sides of old trees, or hanging onto rocks. Who notices moss? It's just ... there, doing whatever it does — so...

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How To Cross 5 International Borders In 1 Minute Without Sweating

So many nations are breaking up. Ukraine is in pieces. Moldova is teetering. Libya has no government to speak of. Sudan broke in two last year; now both sides are fighting. Yugoslavia is seven...

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What A Balloon Shouldn't Do, But For Some Reason Does

http://www.youtube.com/watch?v=y8mzDvpKzfY Great teaching — just plain old knock 'em dead, get it right, make 'em laugh, make 'em wonder instruction — is always going to be rare. Good teachers abound....

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Elemental Storytelling

There's a photograph I know that shows a kid's bicycle lying on its side, one wheel turned upright, a smear of blood tracing its path on the concrete. There's a little package still latched to the...

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