How do we smell?
AdultsHumanNeuroscienceScience...An adult human can distinguish up to 10,000 odors. You use your nose to figure out what to eat, what to buy and even when it's time to take a shower. But how do the molecules in the air get translated into smells in your brain? Rose Eveleth charts the smelly journey through your olfactory epithelium and explains why scent can be so subjective.
Why do we cry? The three types of tears
AdultsBiologyHumanScience...Whether 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.
Inspiring Video Of The Day: I Like Being 98.
AdultsLifePhilosophyHumanThis film tells the story of Evelyn who, despite her limited resources, goes out of her way to help her neighbour.
How sugar affects the brain
AdultsBiologyHealthHuman...When 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.
Could Your Brain Be Hacked?
AdultsHumanProgrammingTechnology...Could technology be used to control your brain?
Isolated tribe man meets modern tribe man for the first time
AdultsHumanSocietyCulture...In the XXI century the team of Jean-Pierre Dutilleaux explorer and ethnographer had the privilege to contact in 1998, after many obstacles, with Los Toulambis a tribe that had never seen a white man, or had been involved with the outside world.