First Contact
Adults Human
Should We Contact Uncontacted Peoples?
The science of skin color
Adults Human
When ultraviolet sunlight hits our skin, it affects each of us differently. Depending on skin color, it'll take only minutes of exposure to turn one person beetroot-pink, while another requires hours to experience the slightest change.
Which Fish Did We Evolve From?
Adults Human
Today's oceans are full of fish with fins that couldn't evolve into limbs like ours. So, who are our ancestors and where did they go?
Is ADHD An Advantage?
Adults Human
Could ADHD be an evolutionary advantage?
How do schools of fish swim in harmony?
Adults Human
How do schools of fish swim in harmony? How do the tiny cells in your brain give rise to the complex thoughts, memories, and consciousness that are you?
Do Blind People Understand Vision? TommyEdisonXP
Adults Human
Tommy Edison, who has been blind since birth, talks about his understanding of vision, what impresses him about sight, and one fear that's motivated by blindness.
What would happen if you didn't drink water?
Adults Human
Water is essentially everywhere in our world, and the average human is composed of between 55 and 60% water. So what role does water play in our bodies, and how much do we actually need to drink to stay healthy? Mia Nacamulli details the health benefits of hydration.
This Is the Most Amazing Biomimetic Robot Hand You've Ever Seen
Adults Human
Third arm? Robot tentacle? My dreams of having extra tentacles may come true!
What Happens When You Die?
Adults Human
What happens after you die?
The Specious Present
Adults Human
What is the specious present? And how do our brains perceive time?
Why do babies' eyes change color?
Adults Human
A weekly show where we endeavor to answer one of your big questions. This week, doxysrkx asks, "Why are babies born with blue eyes?"
GoPro: Pelican Learns To Fish
Adults Human
After being separated from his flock during a storm, Bigbird the pelican was taken in by the staff at a safari camp. Jeffrey, the camp manager, took Bigbird out each morning to fish and developed an unlikely friendship.
Why is my voice different when I hear a recording?
Adults Human
A weekly show where we endeavor to answer one of your big questions. This week, Kristina Bailey asks, "Why does our voice sound different when we hear an audio or video recording of it?"
Why Do We Cry?
Adults Human
Why does your face leak when you're sad or emotional?
Evolution Of Human Species
Adults Human
Watch the evolution of our species in under two minutes. Learn how paleoartist John Gurche draws on fossil discoveries and forensic techniques to create transfixing reconstructions of long-lost human ancestors.
Why Do We Have To Sleep?
Adults Human
Why do we sleep? We spend a third of our lives in slumber, but science has yet to determine exactly why we have do it. Here's a look at how sleep works, why we're not getting enough sleep, what happens if you DON'T sleep, and an idea about where sleep came from in the first place.
The benefits of good posture
Adults Human
Has anyone ever told you, "Stand up straight!" or scolded you for slouching at a family dinner? Comments like that might be annoying-but they're not wrong. Your posture is the foundation for every movement your body makes and can determine how well your body adapts to the stresses on it. Murat Dalkilinç gives the pros of good posture.
Can You Perceive Acceleration?
Adults Human
How do our eyes scan across a landscape? Contrary to popular belief, they don't scan smoothly across a scene, they observe a series of images. The eye is capable of panning smoothly however. If something moves in your field of view, your eyes track it smoothly.
New Human Ancestor Discovered: Homo naledi
Adults Human
Within a deep and narrow cave in South Africa, paleoanthropologist Lee Berger and his team found fossil remains belonging to the newest member of our human family. The Homo naledi discovery adds another exciting chapter to the human evolution story by introducing an ancestor that was primitive but shared physical characteristics with modern humans.
Do We Have to Get Old and Die?
Adults Human
We'd like to thank Focus Features for sponsoring this video - and for inviting us to pre-screen their summer 2015 film "Self/Less". It's a sci-fi flick that explores memory, consciousness, and immortality, and it made us think about the types of immortality that already exist here on Earth.