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How do animals experience pain?

Adults Animals Biology
Humans know the surprising prick of a needle, the searing pain of a stubbed toe, and the throbbing of a toothache. We can identify many types of pain and have multiple ways of treating it - but what about other species?

This Terrifying Worm Snatches Fish from the Ocean Floor

Adults Animals Nature
Sand strikers, also known as bobbit worms, are primitive-looking creatures that lack eyes, or even a brain. Despite this, they are savage predators who shoot out grapple-like hooks to reel in passing fish.

A brief history of numerical systems

Adults History Math
1, 2, 3, 4, 5, 6, 7, 8, 9... and 0. With just these ten symbols, we can write any rational number imaginable. But why these particular symbols? Why ten of them?

Is Hand Sanitizer Actually Bad For You?

Adults Biology Health
Should you stop using hand sanitizer?

Hydrogel: The Future Of The 'Smart Band-Aid'

Adults Science Technology
Engineers at MIT have found a way to prevent hydrogels from dehydrating.

The Real Moral Dilemma of Self-Driving Cars

Adults Self-Driving Cars Technology Transportation Automotive
We talk about all the potentially challenging situations autonomous cars could get into but not about how human drivers are not very good.

Popping Popcorn at 30,000 FPS

Adults Film Food Technology
Popping Popcorn at 30,000 Frames Per Second Filmed in Ultra Slow Motion Macro with the Phantom v2512 Ultra High Speed Camera.

How to master your sense of smell

Adults Biology 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.

The Absurdity of Detecting Gravitational Waves

Adults Physics Technology
A head-vaporizing laser with a perfect wavelength detecting sub-proton space-time ripples.

Would you sacrifice one person to save five?

Adults Life Philosophy Society
Imagine you're watching a runaway trolley barreling down the tracks, straight towards five workers. You happen to be standing next to a switch that will divert the trolley onto a second track.

How An Igloo Keeps You Warm

Adults Construction Science
Building a perfect igloo takes cool science!

Look Into The Future With These Stylish AR Glasses

Adults Future Gadgets Technology
These augmented reality glasses are a standalone computer.

Why Doesn't Time Flow Backwards?

Adults Physics Science
Thanks to Google Making and Science for supporting this series, and to Sean Carroll for collaborating on it!

m&m's Dissolving in Water - 4K

Adults Film Food
We dropped m&m's chocolate in water and discovered something really wonderful!

Post-Truth: Why Facts Don't Matter Anymore

Adults Philosophy Society
Why we can't seem to agree on what's true when it's easier than ever to check.

Why do airlines sell too many tickets?

Adults Economy Math Transportation
Have you ever sat in a doctor's office for hours, despite having an appointment?

Why are we so attached to our things?

Adults Human Self Society
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.

Forget Oxygen-This Leaf Produces Medicine

Adults Health Nature Technology
This artificial leaf creates medicines using sunlight.

Laser Cleaning

Adults Business Technology
High power laser cleaning for rust removal, paint removal, heavy contamination... with the P-Laser QF-1000.

Nessun Dorma Luciano Pavarotti 2006 Olympics Closing Ceremony

Adults Music Sports
Luciano Pavarotti's last performance. Nessun Dorma from Turandot at the 2006 Olympics Closing Ceremony.

Unbelievable Routine Will Leave You Stunned

Adults Music Sports
Boyanka Angelova the Young Gymnast from Bulgaria!