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Kim Steele/Photodisc/Thinkstock How Blimps Work

After newsreels captured the Hindenburg erupting in fire in 1937, the promising development of airship aviation was cut short. Today companies and militaries are taking another look at blimps and the unique qualities that may revive them.

Wincotts/iStock/Thinkstock What’s the deal with headstones?

Headstones have quite an interesting history. From the beginnings of marking graves with simple wood carvings to the elaborate tombstones that would come in the Victorian era, Chuck and Josh break down the deal with all things headstone in this episode.

spreephoto.de/Moment/Getty Images How the Berlin Wall Worked

It's hard to believe now, but just over 25 years ago there was a giant concrete wall separating East and West Germany. In this episode, Chuck and Josh get into the fascinating story of the Berlin Wall.

elevator-sysk-600x350 Going Up: Elevators

Elevators are way more interesting than you might think. In this week's episode, Chuck and Josh board the lift to enlighten everyone as to the ins and outs, and ups and downs, of these handy people movers.

Fuse/Thinkstock How Ebola Works

A disease that was discovered and contained to Central Africa in the 1970s has revived and spread in 2014. Now there is an Ebola outbreak that has moved across borders and science still has no cure for it.

NSA via Getty Images How the NSA Works

Chuck and Josh dive into the secret world of the National Security Agency, from the origins of the snooping outfit, to the recent revelations from whistleblower Edward Snowden.

Péter Gudella/Hemera/Thinkstock What is a Numbers Station?

If you think secretly coded messages sent via short wave radio is Cold War relic, think again. Chuck and Josh are here to dispel that myth, along with many others relating to numbers stations, including why they might still be operational.

Belgium/iStock/Thinkstock How Play-Doh Works

Do you love Play-Doh? Chuck and Josh certainly love to talk about it, from its interesting history as a wall cleaner, to its more scientific chemical properties. It's everything you ever wanted to know about the pliable children's toy.

scratching-morg-600x350 How Morgellons Disease Works

There is a condition that can cause people to feel bugs crawling beneath their skin so acutely that they will use tweezers to pluck them from their eyeballs. It’s a terrible disorder made worse by medicine’s insistence it is all in sufferers’ heads.

Image courtesy of NASA Is there a dark side of the moon?

Josh and Chuck explore the old notion that there’s a dark side of the moon. There is, but it turns out it’s not always the same side. And yes, there’s a side we never see, but it’s not always dark. Make sense? It will in this episode.

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