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Can Video Games Make You Smarter?

AdultsGamingScienceEducation...
Are video games good for you?

Why is yawning contagious? - Claudia Aguirre

AdultsHumanSciencePsychology...
*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.

Does Being Cold Make You Sick?

AdultsBiologyHealthScience...
Can being cold give you a cold?

How Many Heartbeats Do We Get?

AdultsBiologyLifeRelationships...
Ever wonder how the heart symbol came to stand for the actual heart? And why do we speak of the heart as the seat of love, when love really happens in our brains? Is it true that animals only get a billion heartbeats? This week, we give you enough cool cardiac science to make your heart skip a beat.

Why are my ears ringing?

AdultsHealthScienceNeuroscience...
A weekly show where we endeavor to answer one of your big questions. This week, Emma R. asks, "Why do I get that weird ringing noise in my ears?"

An Astronaut's View of Earth

AdultsScienceSpaceWorld...
What it's like to see the Earth from orbit.

How tsunamis work - Alex Gendler

AdultsNatureWorldScience...
The immense swell of a tsunami can grow up to 100 feet, hitting speeds over 500 mph -- a treacherous combination for anyone or anything in its path. Alex Gendler details the causes of these towering terrors and explains how scientists are seeking to reduce their destruction in the future.

What is Deja Vu?!

AdultsMental HealthScienceNeuroscience...
Most of us have felt it before, that strange sensation that you've been somewhere or seen something before, as if you already remembered what's happening. Are you psychic? Nope, that's just deja vu. Why does deja vu happen? Well, scientists aren't completely sure, but they've got a few good theories about it.

Do Cell Phones Cause Brain Tumors?

AdultsGadgetsHealthTechnology...
Do cell phones cause brain tumors? Conflicting results are resolved by looking at the big picture.

What If Humans Disappeared?

AdultsHumanLifeWorld...
If we suddenly disappeared, what would happen to our planet?

How languages evolve - Alex Gendler

AdultsHistoryLanguageScience
Over the course of human history, thousands of languages have developed from what was once a much smaller number. How did we end up with so many? And how do we keep track of them all? Alex Gendler explains how linguists group languages into language families, demonstrating how these linguistic trees give us crucial insights into the past.

How folding paper can get you to the moon - Adrian Paenza

AdultsMathSpaceScience...
Can folding a piece of paper 45 times get you to the moon? By seeing what happens when folding just one piece of paper, we see the unbelievable potential of exponential growth. This lesson will leave you wanting to grab a piece of paper to see how many times you can fold it!

Deep ocean mysteries and wonders

AdultsEcologyEnvironmentNature...
In the deepest, darkest parts of the oceans are ecosystems with more diversity than a tropical rainforest. Taking us on a voyage into the ocean -- from the deepest trenches to the remains of the Titanic -- marine biologist David Gallo explores the wonder and beauty of marine life.

Why is glass transparent?

AdultsNaturePhysicsScience...
If you look through your glasses, binoculars or a window, you see the world on the other side. How is it that something so solid can be so invisible? Mark Miodownik melts the scientific secret behind amorphous solids.

There's No Such Thing As Cold

AdultsPhysicsWeatherScience...
You've felt cold before. Sometimes it's cold outside. But what if I told you that "cold" isn't real? There's no substance or quantity called "cold" in science. We can't measure the amount of "cold" in something. Instead it's about what's NOT there. In this week's video, learn the difference between heat and temperature, why a wind makes us feel colder, and what it's like to live as a mass of jiggling atoms. This is the physics of cold.

Why Hamsters Can Manage So Much Food Inside Its Cheeks

AdultsAnimalsFoodBiology...
The X-ray camera reveals that these cheek pouches actually extend all the way down to the animal's hips, thus explaining how the hamster manages to eat so much (and so quickly).

What's invisible? More than you think

AdultsScienceWorldPsychology...
Gravity. The stars in day. Thoughts. The human genome. Time. Atoms. So much of what really matters in the world is impossible to see. A stunning animation of John Lloyd's classic TEDTalk from 2009, which will make you question what you actually know.