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.
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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.
Learn the basic science of climate change in 24 easy steps.
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.
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, a team of alien geologists arrive at a mysterious blue-green planet, and decide to investigate. Here's what they'll find…
2016 • Science
Stem cells found in the bone marrow are crucial for our health because they are needed to become new blood cells that sustain and protect our bodies. But when the transformation goes wrong, harmful mutations can cause the cells to start replicating without control -- a type of cancer known as leukemia. Danilo Allegra and Dania Puggioni explain how this happens and how certain treatments provide hope for those suffering from the disease.
Both the Greek island of Ikaria and a peninsula in Costa Rica boast some of the world's healthiest and most active folks over 100 years old. Discover how they do it with simple foods and exercise that are fully integrated into daily life.
S1E3 • Live to 100: Secrets of the Blue Zones • 2023 • Health
NOVA takes you inside the operating room to witness organ transplant teams transferring organs from donors to recipients. Meet families navigating both sides of a transplant, and researchers working to end the organ shortage. Their efforts to understand organ rejection, discover ways to keep organs alive outside the body, and even grow artificial organs with stem cells, could save countless lives.
When Hannah Fry is diagnosed with cervical cancer at the age of 36, she starts to interrogate the way we diagnose and treat cancer by digging into the statistics to ask whether we are making the right choices in how we treat this disease. Are we sometimes too quick to screen and treat cancer? Do doctors always speak to us honestly about the subject? It may seem like a dangerous question to ask, but are we at risk of overmedicalising cancer? At the same time, Hannah records her own cancer journey in raw and emotional personal footage, where the realities of life after a cancer diagnosis are laid bare.
2022 • Health
Is sugar the new tobacco? How did the food industry get us to stop asking the question: is sugar toxic? It all starts with a secret PR campaign dating back to the 1970s. For forty years, Big Sugar deflected all threats to its multi-billion dollar empire, while sweetening the world's food supply. As obesity, diabetes, and heart disease rates skyrocket, doctors are now treating the first generation of children suffering from fatty liver disease. The sugar industry is once again under siege. They dodged the bullet once. Can they do it again?
2015 • Health
The story of a human life, from first cry to final breath, told from within the body. This documentary film combines state-of-the-art special effects, pioneering CGI, startling realistic models and real in-body photography. Exploring human physiology from birth, through the drama of puberty, into adulthood, and finally old age, the programme offers a visually-stunning insight into how our bodies function. Throughout life we undergo a continuous second-by-second transformation, every move we make and every outside stimulus triggers a reaction through the skin, bones, organs, muscles and cells. We breathe on average 700 million breaths in a lifetime, an adult skeleton is replaced every seven to 10 years, we shed as many as 30,000 dead skin cells every minute, and the food we eat travels 30 feet on its journey through our bodies. The Living Body takes you beneath the skin to reveal how our bodies evolve from birth to old age, and the amazing biological systems we need to thrive. Embark on an incredible journey tracing the story of one everywoman using milestones to examine the everyday workings of a living, functioning body in ways not seen before. Cutting-edge miniature endoscopic HD cameras delve deep inside the mouth, throat, heart, lungs, digestive tract, brain and reproductive organs to shed new light on how and why our bodies do what they do. Stunning photography reveals universal moments in human development at the most minute level, providing insight into both our own individual metamorphosis and our shared human experiences.
Naked Science • 2015 • Health