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The Deadliest Being on Planet Earth - The Bacteriophage

AdultsBiologyGeneticsNature...
A war has been raging for billions of years, killing trillions every single day, while we don't even notice. This war involves the single deadliest being on our planet: The Bacteriophage.

Why Do We Itch?

AdultsHumanNeuroscienceHealth...
It's one of the most annoying sensations our bodies can feel, but does anything feel better than when you scratch an itch? Ok, maybe *some* things. But itching and scratching are up there. How does this weird sensation work? And what is itching for?

What Makes Sleep Paralysis So Terrifying?

AdultsHealthScience
What causes sleep paralysis, and do you need to be worried?

What Happens When You Take Steroids?

AdultsBiologyHealthScience
How do steroids work? The pros and cons.

What causes headaches? - Dan Kwartler

AdultsHealthHistoryNeuroscience
In ancient Greece, the best-known remedy for a long-standing headache was to drill a small hole in the skull to drain supposedly infected blood.

What If You Didn't Sleep For A Week?

AdultsHealthHuman
We all know sleep is important, but what if you just.... stopped doing it?

Could You Be Immune To Everything?

AdultsBiologyHealth
Do you remember having a cold in 5th grade? Or the flu a couple years ago? Your immune system does.

Is Binge Watching Bad For You?

AdultsHealthTechnology
Are you watching too many screens?

Is It Safe To Get Your DNA Tested?

AdultsFamilyGeneticsScience...
Once it's out of your body, your genetic information is valuable to a variety of people, but you can keep it safe(ish) with a few simple steps.

What it Feels Like to Slide Downhill at 90 M.P.H.

AdultsHumanSportsHealth
John Daly is an American skeleton racer and a two-time Olympic athlete. Sliding face-down, head-first on a slick bobsled track at 90 mph might sound insane, but for Daly, it's the thrill that keeps him coming back.

What Is The Most Dangerous Sport In The World?

AdultsHealthSports
With the Olympics wrapping up, we wondered: what is the most dangerous sport?!

Debunking Anti-Vaxxers

AdultsBiologyHealthSociety
Here's what to say to anti-vaxxers!

We Asked Bill Gates: Do You Need To Be Rich To Be Healthy?

AdultsEconomyHealthSociety
This video is in collaboration with Bill and Melinda Gates. You can check out the Gates Annual Letter here: http://b-gat.es/2Cfph0j

Why Electroshock Therapy Is Back

AdultsHealthMental HealthTechnology...
Shocking the brain has come and gone as a medical treatment, but it's currently resurging, as it often provides the best form of relief for severe depression and advanced Parkinson's disease.

How did teeth evolve? - Peter S. Ungar

AdultsBiologyHealthHuman...
You may take them for granted, but your teeth are a marvel. They break up all your food over the course of your life, while being strong enough to withstand breakage themselves. How do they do it?

The Girl Who's Allergic To Everything | Living Differently

AdultsDisabilityHealthLife...
British Championship disability gymnast, Natasha Coates, 22, is allergic to everything. She has won 19 British titles and placed first in the British Disability Championships.

It's not you. Commuting is bad for your health.

AdultsHealthTransportationWork...
My commute is like a second job, and it might be killing me.

How does your immune system work? - Emma Bryce

AdultsBiologyHealthScience
The immune system is a vast network of cells, tissues, and organs that coordinate your body's defenses against any threats to your health. Without it, you'd be exposed to billions of bacteria, viruses, and toxins that could make something as minor as a paper cut or a seasonal cold fatal. So how does it work? Emma Bryce takes you inside the body to find out.

Should You Let A Dog Lick Your Face?

AdultsHealthHumanPets
Canine and human mouths are bacterial ecosystems, but can they harm one another? "Sometimes, the oral contact between dogs and their owners can be more extensive than that between parent and child. Dogs kiss and lick their owners to express amiable emotions. This raises the possibility of transferring bacteria from the oral microbiome of dogs to their human owners."

The Milk-Industrial Complex: Why You Don't Need to Drink Milk

AdultsFoodHealthIndustry
Readers of Aaron's blog know of his beef with the milk industrial complex. Why does milk, of all beverages, get a pass in our efforts to reduce everyone's caloric intake? Why is it encouraged, when all others are shunned? Is it because you need the calcium? Is it because it makes your bones stronger? Watch, and learn why the milk emperor has no clothes.

Where does all the snot come from? - James May's Q&A (Ep 3) - Head Squeeze

AdultsHealthHumanScience
James May tells us exactly where that green snot in our nostrils comes from. He also delves into how mucus helps prevent harmful foreign objects from entering our bodies.