Why Do We Have To Sleep? • 2015 It's Okay To Be Smart

Category: Health
Download:

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.

It's Okay To Be Smart • 2015 - 2016 • 6 episodes •

How Many Heartbeats Do We Get?

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.

Science

Climate Science: What You Need To Know

Learn the basic science of climate change in 24 easy steps.

Environment

There's No Such Thing As Cold

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.

Physics

Why Do We Have To Sleep?

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.

2015 • Health

100,000,000 Years From Now

100,000,000 years from now, a team of alien geologists arrive at a mysterious blue-green planet, and decide to investigate. Here's what they'll find…

2016 • Science

You might also like

Bloody Beginnings

Presenter Michael Mosley finds out how the early days of surgery were dark and barbaric, when the surgeon’s knife was more likely to kill you than save you, and invasive medicine generally meant being bloodlet by leeches to within an inch of your life.

5Blood and Guts: A History of Surgery • 2009 • Health

Coffee Buzz

Over 400 million cups of coffee are consumed daily in the United States alone. Making coffee one hot drink, even when served cold. Experts reveal what makes your specialty coffee taste the way it does.

2019 • Health

What is Alzheimer's disease?

Alzheimer's disease is the most common cause of dementia, affecting over 40 million people worldwide. And though it was discovered over a century ago, scientists are still grappling for a cure.

TED-EdHealth

Immortal: A Horizon Guide to Ageing

Is there any way to slow or even prevent the ravages of time? Veteran presenter Johnny Ball looks back over the 45 years that Horizon, and he, have been on air to find out what science has learned about how and why we grow old. Charting developments from macabre early claims of rejuvenation to the latest cutting-edge breakthroughs, Johnny discovers the sense of a personal mission that drives many scientists and asks whether we are really any closer to achieving the dream of immortality.

Horizon • 2014 • Health

Nature's Candy

Episode 4 – reveals the surprising impact sugar can have on our health. The added sugars in most packaged foods are one of the deadliest ingredients in our modern diet. But the naturally-occurring sugars, antioxidants and nutrients found in most fruits and berries make these sweet treats some of the healthiest foods on our planet.

4/4Prescription: Nutrition • 2017 • Health

Grow

Over your lifetime you undergo an extraordinary change - no other animal on earth goes through such a dramatic metamorphosis. In this programme, Chris and Xand van Tulleken explore the latest understanding of how we all grow.

1/3The Human Body: Secrets of Your Life Revealed • 2017 • Health