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subinpumsom/iStock/Thinkstock Halitosis: Worst Smell Ever?

Occasional bad breath is one thing, halitosis is another. Or is it? From its odd origins as a marketing ploy to modern weight loss diets that can induce this embarrassing condition, you can learn all about bad breath here.

Image courtesy of NASA How Mars Works

Sure today Mars would kill you with its thin, toxic atmosphere and cold desert temperature swings of 100 degrees, but early on it and Earth were practically twins. Find out how the two planets diverged and if there might be life on the Red Planet.

FPG/Archive Photos/Getty Images How Burlesque Works

What’s old is new again as far as burlesque is concerned. Come explore what was an old-timey outlet for empowering women that later gave rise to the striptease once men started running the show. Now, women have reclaimed the art and it is benefiting.

jokerproproduction/iStock/Thinkstock How Dissociative Identity Disorder Works

Dissociative Identity Disorder was known as multiple personality disorder until a case of mass hysteria brought on by the movie-mad public and unscrupulous psychiatrists led to a stigma over the term. Now psychiatry has gotten serious about the condition.

Sergey Khachatryan/Hemera/Thinkstock How Natural Selection Works

While evolution gets all the spotlight for moving species into better versions of themselves, but really it’s natural selection that is the engine driving the process. Learn all about this elegant scientific observation that forms the basis of life.

Georgios Kollidas/Hemera/Thinkstock How Charles Darwin Worked

Charles Darwin wasn’t the first or only scientist to grasp the theory of evolution through natural selection, but he became its father and icon. Learn about the man who reluctantly but bravely became the source of the divide between religion and science.

claudiodivizia/iStock How Income Taxes Work

They are among the more reviled concepts of modern life, and yet they are as inevitable as death. Join Josh and Chuck as they look into the history and the basis of income taxes in the U.S. in this episode.

Sebastien_B/iStock/Thinkstock How 3D Printing Works

With 3D printing you can print not just pictures and words, but actual objects from files. And as costs come down, the list of things you can print expand: from food, to organs, to guns.

joshuaraineyphotography/iStock/Thinkstock How Landslides Work

Landslides are a form of mass movement of the Earth, and with the amount of death and destruction they wreak on the people and towns they cover, their toll can be massive. Learn all about landslides in this episode with Josh and Chuck.

Fodor90/iStock/Thinkstock How Amnesia Works

Those movies where someone gets hit on the head and can’t remember who they are anymore? They’re actually not too far off from the reality of amnesia. Learn everything about this bizarre and life-robbing condition with Josh and Chuck.

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