2010

S11.E1 ∙ How Many Sides Does A Circle Have?

Mon, Mar 08, 2021

You probably think you know a circle. Maybe you've even thought a little bit about what a circle is and what a circle isn't. But do you know how many sides a circle has? Australia didn't, and the answer is more complicated than it seems.

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S11.E2 ∙ Why Doesn't Lightning Kill All The Fish?

Tue, Mar 16, 2021

Please don't use a toaster in the bathtub. The combination of electricity and water will be too much for your heart. But why don't fish have the same problem when lightning strikes the ocean?

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S11.E3 ∙ Is Your Heart Too Hot To Hold?

Mon, Mar 22, 2021

To settle a bet with your best friend, you jam your hand deep into his thoracic cavity to grip his heart. You want to see whether it's actually as searing-hot as he claims it is. Will it burn your hand? Are your internal organs too hot to hold onto? Well... no. But there's more to it than you think.

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S11.E4 ∙ Can You Brush with a Toothpaste Sandwich?

Tue, Mar 30, 2021

Every time you squirt minty toothpaste onto the synthetic bristles of a toothbrush and scrub them back and forth across your teeth, a question burns in your brain: Could a toothpaste sandwich brush your teeth just as well instead? You're doing virtually the same thing ancestors thousands of years ago did with sticks and tooth powders. Yours just tastes better, so why not turn it into a food?

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S11.E5 ∙ What Foods Can Your Body Cook?

Wed, Apr 14, 2021

In my video about whether your heart is too hot to hold, I started to wonder whether your body itself could actually cook food inside it. Maybe in your mouth, maybe in your stomach, maybe in your... anyway, what can you cook with the body heat nature gave you? Believe it or not, there are options for identifying the food you can cook inside your body.

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S11.E6 ∙ The Easiest Cryptography Game

Mon, May 24, 2021

How is it possible to roll dice to randomly choose 12 squares out of a grid of 144 and reveal a hidden message in the correct order? It's not only possible, it's actually guaranteed.

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S11.E7 ∙ The Penny Problem That Breaks Your Brain

Tue, Jun 15, 2021

Fifty rolls of fifty pennies but one roll contains fakes. Which one? If the fakes have a slightly different weight can you determine which roll is fake with a single weight measurement? If you want to figure it out yourself, pause the video quick because the answer is revealed about half way through.

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S11.E8 ∙ You'll Never Win This Game

Sun, Jul 18, 2021

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S11.E9 ∙ The 50/50 Problem You Won't Believe

Sun, Aug 15, 2021

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S11.E10 ∙ Making A Math Murderer

Tue, Sep 14, 2021

Just think of all the questions that arise when a seemingly-healthy baby dies. Was there an illness that went undetected? Was there a rare genetic defect that couldn't possibly have been known? Are any signs of physical trauma related to the resuscitation efforts of a fragile infant, or something more sinister? Every time a baby dies, police investigate with a host of complex questions to determine whether the death is natural and accidental, or... not. And the odds are anything but clear. So what do we do when it happens twice to the same person? What are the odds of THAT?

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S11.E11 ∙ The FBI Framed Him With Science

Tue, Oct 26, 2021

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S11.E12 ∙ Life In Prison For Your Name

Mon, Nov 22, 2021

When Joyce Ann Brown saw her name in the newspaper in connection with a gruesome murder, she went straight to the police to clear up the obvious error. She was at work when it happened and she had no violent criminal history. How could the police possibly think she could be involved?

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S11.E13 ∙ Math Caught $1 Million Dollar Fraud

Wed, Dec 15, 2021

"...for the root of all evils is the love of money," states the First Epistle of Paul to Timothy -- and no woman in 19th century America exemplifies that more than Hetty Green. She was a remarkable, talented financier who built an empire and forged headways for women in business. But in 1865, Hetty revealed the true depths of her greed when she orchestrated a will forgery that would pave the way for the use of mathematical analysis in the courtroom.

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S11.E14 ∙ The Worst Math Ever Used In Court

Wed, Dec 22, 2021

As math and our minds both become more sophisticated, we can use strategies like probability to fill gaps in the unknown. That's particularly useful in a court of law, where we almost never have all the facts we need. But what happens when bad math makes an uncertain situation even worse? In this case, people go to prison. And all it took was the misapplication of the product rule.

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