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Why no aquarium has a great white shark

AdultsAnimalsNatureScience
Many have tried to keep a white shark in captivity. Here's why that's so difficult.

The left brain vs. right brain myth - Elizabeth Waters

AdultsHumanNeuroscienceScience...
The human brain is visibly split into a left and right side. This structure has inspired one of the most pervasive ideas about the brain: that the left side controls logic and the right side controls creativity. And yet, this is a myth, unsupported by scientific evidence. So how did this idea come about, and what does it get wrong? Elizabeth Waters looks into this long held misconception.

Can you find the next number in this sequence? - Alex Gendler

AdultsCreativityMathScience...
1, 11, 21, 1211, 111221. These are the first five elements of a number sequence. Can you figure out what comes next? Alex Gendler reveals the answer and explains how beyond just being a neat puzzle, this type of sequence has practical applications as well.

How does caffeine keep us awake? - Hanan Qasim

AdultsAddictionFoodHealth...
Over 100,000 metric tons of caffeine are consumed around the world every year. That's equivalent to the weight of 14 Eiffel Towers! Caffeine helps us feel alert, focused, and energetic, even if we haven't had enough sleep - but it can also raise our blood pressure and make us feel anxious. So how does it keep us awake? Hanan Qasim shares the science behind the world's most widely used drug.

The Hunt for Patient Zero Is Important But Impossible

AdultsHealthScienceSociety
Finding the source of a disease outbreak requires intensive detective work from health experts. But is finding Patient Zero even possible?

Why people think they see ghosts

AdultsPsychologySpiritualityScience...
Even though there is no scientific evidence that ghosts exist, you may not be crazy if you see one.

How ancient Romans made stronger concrete than today

AdultsCitiesConstructionHistory...
Many structures built by ancient Romans around 2,000 years ago are still standing, and some are still in excellent condition. Over the last decade, researchers have come discover the Romans' secret concrete recipe that has maintained so many of its now-ancient buildings.

Who Lives At The Bottom Of The Mariana Trench?

AdultsAnimalsEnvironmentNature...
Creepy Monsters At The Bottom Of The Mariana Trench.

Late sleeper? Blame your genes.

AdultsGeneticsScienceHealth
If you're not a morning person, science says you probably never will be.

A popular way to cook broccoli removes important nutrients

AdultsFoodScienceHealth...
Broccoli is one of the most nutritious vegetables. However, boiling it takes many of those essential nutrients out. There's a simpler way to cook it and retain all the nutrition. Following is a complete transcript of the video.

Decoding the ancient astronomy of Stonehenge

AdultsHistoryScienceSpace...
The solstice alignments of Stonehenge, explained.

What can you learn from ancient skeletons? - Farnaz Khatibi

AdultsHistoryHumanScience...
Ancient skeletons can tell us a great deal about the past, including the age, gender and even the social status of its former owner. But how can we know all of these details simply by examining some old, soil-caked bones? Farnaz Khatibi examines a fascinating branch of science known as biological anthropology.

What Would Happen in an Apocalypse... According to Science

AdultsHumanSocietyWorld...
Most people think the apocalypse would bring violence, crime, and selfishness. But according to scientists, that's just not realistic.

Meet NASA's new class of astronauts

AdultsScienceTechnologySpace
More than 18,300 candidates applied to be astronauts in NASA's latest class-smashing the record of 8,000 applicants in 1978-and only 12 got the job. Here's who made the cut.

Some People Are Programmed to Sleep Better Than Others

AdultsGeneticsHealthScience
Do you have a hard time getting a good night's sleep? According to scientists, it's all in your genes.

Jumping Water Droplets Could Be the Future of Cooling Computers

AdultsSoftware EngineeringTechnologyEngineering...
Engineers have created a new water-based cooling system that could put an end to electronics crashing and overheating.

The ferocious predatory dinosaurs of Cretaceous Sahara - Nizar Ibrahim

AdultsAnimalsHistoryWorld...
In Cretaceous times (around 100 million years ago), North Africa was home to a huge river system and a bizarre menagerie of giant prehistoric predators -- including the Spinosaurus, a dinosaur even more fearsome than the Tyrannosaurus rex. Nizar Ibrahim uses paleontological and geological data to reconstruct this "River of Giants" in surprising detail.

This Is Not What Space Looks Like

AdultsPhotographySpaceTechnology...
Amazing images of the far reaches of the universe are everywhere, but are they accurate? What does space really look like?

NASA Is Going to the Sun! But How...and Why?

AdultsScienceSpaceTechnology
In 2018, NASA will launch a solar probe that will travel closer to the sun than any spacecraft before. But why? What are they looking for?

Why don't perpetual motion machines ever work? - Netta Schramm

AdultsScienceTechnologyWork...
Perpetual motion machines - devices that can do work indefinitely without any external energy source - have captured many inventors' imaginations because they could totally transform our relationship with energy. There's just one problem: they don't work. Why not? Netta Schramm describes the pitfalls of perpetual motion machines.

Four inventions that might change the world

AdultsCreativityFutureScience...
Tiny lab-grown organs. A spongy cloth that absorbs oil spills. Sure, why not. These are some of the finalists for the European Inventor Award.