The first ever vaccine was created when Edward Jenner, an English physician and scientist, successfully injected small amounts of a cowpox virus into a young boy to protect him from the related (and deadly) smallpox virus. But how does this seemingly counterintuitive process work? Kelwalin Dhanasarnsombut details the science behind vaccines.
We all know that mankind can't live without air, food and water...the same is true of salt. The salt on your table is a key to unlocking the story of our planet and the cosmos. Big History reveals how this simple molecule underpins our civilization
The heart is the most symbolic organ of the human body. Throughout history it has been seen as the site of our emotions, the very centre of our being. But modern medicine has come to see the heart as just a pump; a brilliant pump, but nothing more. And we see ourselves as ruled by our heads and not our hearts. In this documentary, filmmaker David Malone asks whether we are right to take this view. He explores the heart's conflicting histories as an emotional symbol and a physical organ, and investigates what the latest science is learning about its structures, its capacities and its role. In the age-old battle of hearts and minds, will these new discoveries alter the balance and allow the heart to reclaim something of its traditional place at the centre of our humanity?
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
These days, transplant surgery saves thousands of lives every year and almost everything, from heart to eyes, can be replaced. But in the beginning, transplants killed rather than cured, because surgeons didn’t understand that they were taking on one of the most efficient killing systems we know of – the human immune system.