Why do your knuckles pop?
Adults Human
Some people love the feeling of cracking their knuckles, while others cringe at the sound. But what causes that trademark pop? And is it dangerous? Eleanor Nelsen gives the facts behind joint popping.
Could We Clone Ourselves?
Adults Human
Is the science of Orphan Black realistic? Could we clone humans, or engineer them to have customized traits? We take a look at today's genetic engineering technologies to find out if designer babies and human cloning is, or should be, a reality.
How the heart actually pumps blood
Adults Human
For most of history, scientists weren't quite sure why our hearts were beating or even what purpose they served. Eventually, we realized that these thumping organs serve the vital task of pumping clean blood throughout the body. But how? Edmond Hui investigates how it all works by taking a closer look at the heart's highly efficient ventricle system.
Why do we get dark bags under our eyes?
Adults Human
A weekly show where we endeavour to answer one of your big questions. This week, "bored during school" asks, "Why do we get dark bags under our eyes when we're tired?"
Experiment Shows That All Of Us Are Naturally Altruistic
Adults Human
Put to work at the Max Planck Institute for Evolutionary Anthropology in Germany, Alan Alda finds out how children will help, and like it, while chimps are less inclined to offer enthusiastic assistance.
If superpowers were real: Super speed
Adults Human
What if super speed wasn't just the stuff of epic comic book stories? Is it scientifically possible to be super speedy? In this series, Joy Lin tackles six superpowers and reveals just how scientifically realistic they can be to us mere mortals.
Why is yawning contagious? - Claudia Aguirre
Adults Human
*Yaaawwwwwn* Did just reading the word make you feel like yawning yourself? Known as contagious yawning, the reasons behind this phenomenon have been attributed to both the physiological and psychological. It's been observed in children as young as four and even in dogs! Claudia Aguirre visits the many intriguing theories that might explain contagious yawning.
What If Humans Disappeared?
Adults Human
If we suddenly disappeared, what would happen to our planet?
How a wound heals itself
Adults Human
Our skin is the largest organ in our bodies, with a surface area of about 20 square feet in adults. When we are cut or wounded, our skin begins to repair itself through a complex, well-coordinated process. Sarthak Sinha takes us past the epidermis and into the dermis to investigate this regenerative response.
Why Am I Tired?
Adults Human
Why do we feel so tired all the time? Hannah Fry looks at the reasons modern life might be exhausting us, from irregular bedtimes to blue lights from our phones.
Why Your Brain Is In Your Head
Adults Human
Have you ever wondered why the brain is located where it is?
Can You Erase Bad Memories?
Adults Human
What if you could delete specific memories?
When The Lion Sees Its Rescuer
Adults Human
Lions aren't that cruel. They know how to show their gratitude.
This Girl Befriends A Dangerous Moray Eel
Adults Human
This unlikely friendship is really amazing.
GoPro: Diver Saves Sea Turtle
Adults Human
Divers off the coast of Mexico save a sea turtle that became tangled in rope.
How Much Sleep Do You Actually Need?
Adults Human
If you get too little, or too much, your brain could suffer.