Why do we cry? The three types of tears
Adults HealthWhether we cry during a sad movie, while chopping onions, or completely involuntarily, our eyes are constantly producing tears. Alex Gendler tracks a particularly watery day in the life of Iris (the iris) as she cycles through basal, reflex and emotional tears.
The mystery of motion sickness
Adults HealthAlthough one third of the population suffers from motion sickness, scientists aren't exactly sure what causes it. Like the common cold, it's a seemingly simple problem that's still without a cure. And if you think it's bad on a long family car ride, imagine being a motion sick astronaut! Rose Eveleth explains what's happening in our bodies when we get the car sick blues.
How sugar affects the brain
Adults HealthWhen you eat something loaded with sugar, your taste buds, your gut and your brain all take notice. This activation of your reward system is not unlike how bodies process addictive substances such as alcohol or nicotine -- an overload of sugar spikes dopamine levels and leaves you craving more. Nicole Avena explains why sweets and treats should be enjoyed in moderation.
The Invisible Universe Of The Human Microbiome
Adults HealthThe next time you look in a mirror, think about this: In many ways you're more microbe than human. There are 10 times more cells from microorganisms like bacteria and fungi in and on our bodies than there are human cells. But these tiny compatriots are invisible to the naked eye. So we asked artist Ben Arthur to give us a guided tour of the rich universe of the human microbiome.
Should we eat bugs?
Adults HealthWhat's tasty, abundant and high in protein? Bugs! Although less common outside the tropics, entomophagy, the practice of eating bugs, was once extremely widespread throughout cultures. You may feel icky about munching on insects, but they feed about 2 billion people each day (Mmm, fried tarantulas).
How to Memorize | How to Remember Names | Memory Speaker
Adults HealthMemory speaker and memory expert, Ron White, gives a quick 20 minute speech with tips on: - How to remember names - The value of remembering names - How to memorize using the roman room or method of loci - Eat foods good for the memory - Study tips for students
The effects of DBS on the motor symptoms of Parkinson's Disease
Adults HealthAndrew was diagnosed with Early Onset Parkinson's Disease in 2009 when he was 35 years old. He lives with his wife and two children in Auckland, New Zealand. In November 2012 and February 2013 he underwent a surgical procedure, Deep Brain Stimulation surgery, to help control his motor symptoms.
What is fat? - George Zaidan
Adults HealthAs the narrative goes, fat is bad. Well, it's actually more nuanced than that. The type of fat you eat is more impactful on your health than the quantity. George Zaidan examines triglycerides, the varied molecules that make up fat, and how to identify which types of fat you are consuming.