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Why do we itch? - Emma Bryce

Adults Human
The average person experiences dozens of individual itches each day. We've all experienced the annoyance of an inconvenient itch - but have you ever pondered why we itch in the first place? Is there actually an evolutionary purpose to the itch, or is it simply there to annoy us? Emma Bryce digs deep into the skin to find out.

5-Yr-Old Pool Prodigy

Adults Human
Meet Keith O'Dell, a bonafide pool playing prodigy. At just five years old, Keith pockets balls like a pro. The sport is in Keith's genes - his parents play pool, his grandparents play pool, the family even eats dinner on the pool table. His father says Keith was "born to play pool." The question is, how will his incredible talent effect the life ahead of him?

Everything Scientists Could Learn By Looking At Your Skull

Adults Human
Our skulls are all unique, but they also share characteristics across groups of people. Scientists can use this information to learn a lot about the previous "owner" of the skull.

How does your body know what time it is? - Marco A. Sotomayor

Adults Human
Being able to sense time helps us do everything from waking and sleeping to knowing precisely when to catch a ball that's hurtling towards us. And we owe all these abilities to an interconnected system of timekeepers in our brains. But how do they work? Marco A. Sotomayor details how human bodies naturally tell time.

We Got Our DNA Tested, Here's How It Actually Works

Adults Human
Trace and Amy get their DNA test results, and we talk to an expert about how scientists actually get genetic information out of DNA.

Why Can't Chimpanzees Speak?

Adults Human
Chimpanzees are very smart animals, so why can't they speak? Tara is here to explain how a gene mutation allows humans to speak, but not chimps.

What Magnetizing Cockroaches Can Teach Us About Navigation

Adults Human
A new study has found cockroaches can sense the Earth's magnetic field, an ability called magnetoreception. Could humans have this sense, too?

Here's what happens to your knuckles when you crack them

Adults Human
One man cracked his knuckles in one hand for 60 years and not the other. Watch the video to see what he found out.

Proof of evolution that you can find on your body

Adults Human
You have your mom's smile, your dad's eyes, and the ear muscles of a Triassic mammal.

Weird Things Your Body Does When You're Around Your Crush

Adults Human
Love has some strong effects on our bodies. From blushing to sweating, why do we react the way we do when facing a crush?

All That We Share

Adults Human
We live in a time where we quickly put people in boxes. Maybe we have more in common than what we think? Introducing All That We Share. The English version.

The Immune System Explained I - Bacteria Infection

Adults Human
Every second of your life you are under attack. Bacteria, viruses, spores and more living stuff wants to enter your body and use its resources for itself. The immune system is a powerful army of cells that fights like a T-Rex on speed and sacrifices itself for your survival.

How to master your sense of smell

Adults Human
Some perfumers can distinguish individual odors in a fragrance made of hundreds of scents; tea-experts have been known to sniff out the exact location of a particular tea; and the NYC Transit Authority once had a employee responsible only for sniffing out gas leaks.

Why are we so attached to our things?

Adults Human
After witnessing the "violent rage" shown by babies whenever deprived of an item they considered their own, Jean Piaget - a founding father of child psychology - observed something profound about human nature: Our sense of ownership emerges incredibly early.

You Can't See This (MIND TRICKS)

Adults Human
Your eyes aren't always telling the truth.

Introverts vs Extroverts

Adults Human
Written by Amanda Edward, Rachel Salt, Gregory Brown and Mitchell Moffit

Elephant Come To Rescue People

Adults Human
This video show the bond between Darrick and elephant Kham Lha at Elephant Nature Park when she think Darrick in trouble, so she rushed to the river and try to save him. This is can show us that, when we treat animal with love, they always paid love back to us.

You Have A Second Brain

Adults Human
Written by Annik Carson, Gregory Brown, Rachel Salt and Mitchell Moffit

Could we survive prolonged space travel? - Lisa Nip

Adults Human
Prolonged space travel plays a severe toll on the human body: microgravity impairs muscle and bone growth, and high doses of radiation cause irreversible mutations.

Why Are Teens So Moody?

Adults Human
A look inside the teenage brain!

Rosalind Franklin: DNA's unsung hero - Claudio L. Guerra

Adults Human
The discovery of the structure of DNA was one of the most important scientific achievements in human history.