How Does Jet Lag Work?  

Yeah, your sleeping pattern gets screwy when you fly to different time zones. But what are the symptoms of jet lag? What causes it? And how can you remedy it?

Why Does The Shower Get Hot When The Toilet Is Flushed?  

Were you burned the last time someone flushed the toilet while you were showering? It's a simple plumbing fix.

How Do You Find Water In The Wild?  

In case you ever get stranded in the wild without an obvious source of fresh water, here are a few things you can do to collect some.

What Are Eye Boogers?  

The gunk builds up at the inner corners of our eyes is residue of the stuff the coats and protects our eyeballs all the time. Learn what it’s made of and why it turns to sand overnight.

Why Do We Get Morning Breath?  

Every morning we wake up with bad breath. What does bacteria and a lack of saliva have to do with it?

Do Animals Laugh?  

It’s no secret that some animal species are highly intelligent – but do they also “get” jokes? Can they laugh? Are laughter and intelligence even related?

How Much Does It Cost To Run For President?  

There’s a big difference between running for President and actually winning the election. So how much money will you need to have a decent shot at being Commander-in-Chief?

Can I See the Stuff Astronauts Left On the Moon?  

Astronauts left over a hundred items on the moon's surface. But are today's telescopes powerful enough to see what's there?

What Would Space Do To The Human Body?  

Space without a suit? You’ll probably die from the lack of pressure in a vacuum. But other extreme hazards won’t help either.

Does "Power Dressing" Actually Work?  

Dressing up to feel powerful may have been a fashion fad of the 1980s, but do we still think differently if we wear formal clothes?

How Dirty Is Soap?  

It’s good hygiene to wash your hands after touching shared bathroom surfaces. But bars of soap are a shared surface. Does soap really help get you clean?

How Does Hair Dye Work?  

Some hair dyes are basically fine-grained paint. But dyes that stick with you for more than a couple weeks physically and chemically change each hair. Learn how with Christian Sager.

How Do Tattoo Machines Work?  

Tattoo machines (sometimes called guns) haven’t changed much since the 1890s because they’re such elegant devices. Tune in to learn how the most common types work.

Could Alien Life Exist?  

What makes a planet ideal for sustaining life?

Does the Human Body Really Replace Itself Every 7 Years?  

The short answer is “no.” Tune in to learn how long it really takes, plus how nuclear weapons led scientists to the solution.

Are Plants Conscious?  

Scientists have found evidence that plants have senses, memories, and can even communicate with each other. But does this mean they're conscious?

Why Are There So Many Different Kinds of Milk?  

Christian explains the difference between common types of milk, looking at calories, fat and the rest of their composition.

What Happens When You Get Ringing In Your Ears?  

Tinnitus is what makes your ears ring after a loud noise. And it's really annoying.

Why Do We Get Brain Freeze?  

We all know what an ice cream headache feels like. Christian's here to explain why they happen. It involves temperature (duh), nerves and lots of blood.

What is Synesthesia?  

It’s true – some people hear colors, or taste words. But what produces synesthesia?

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