What makes muscles grow? - Jeffrey Siegel
Adults BiologyWe have over 600 muscles in our bodies that help bind us together, hold us up, and help us move. Your muscles also need your constant attention, because the way you treat them on a daily basis determines whether they will wither or grow. Jeffrey Siegel illustrates how a good mix of sleep, nutrition and exercise keep your muscles as big and strong as possible.
Revolutionizing Heart Surgery With Virtual Reality
Adults BiologyHave you ever wondered what it would be like to take a ride through the human body on the Magic School Bus? Well, a new bit of virtual reality technology is taking that concept and applying it to medical training. Doctors can now teleport inside the human heart and practice surgery over and over again, and this training could revolutionize the future of health care.
Oxygen's surprisingly complex journey through your body - Enda Butler
Adults BiologyOxygen forms about 21% of the air around us. In your body, oxygen forms a vital role in the production of energy in most cells. But if gases can only efficiently diffuse across tiny distances, how does oxygen reach the cells deep inside your body? Enda Butler tracks the surprisingly complex journey of oxygen through your body.
Why do we itch? - Emma Bryce
Adults BiologyThe average person experiences dozens of individual itches each day. We've all experienced the annoyance of an inconvenient itch - but have you ever pondered why we itch in the first place? Is there actually an evolutionary purpose to the itch, or is it simply there to annoy us? Emma Bryce digs deep into the skin to find out.
The Immune System Explained I - Bacteria Infection
Adults BiologyEvery second of your life you are under attack. Bacteria, viruses, spores and more living stuff wants to enter your body and use its resources for itself. The immune system is a powerful army of cells that fights like a T-Rex on speed and sacrifices itself for your survival.
How to master your sense of smell
Adults BiologySome perfumers can distinguish individual odors in a fragrance made of hundreds of scents; tea-experts have been known to sniff out the exact location of a particular tea; and the NYC Transit Authority once had a employee responsible only for sniffing out gas leaks.