Body & Nervous System
Why Do We Blush?
Blushing is an involuntary nervous system response that floods your face with blood. You cannot stop it on command, and that is by design.
blushingembarrassment
Biology & Sensory Science
Why Does Spicy Food Make Your Nose Run?
Capsaicin in spicy food activates heat receptors in your nose and sinuses, triggering the same mucus response as an actual threat. Your body thinks you are breathing something hot.
spicy foodcapsaicin
Neuroscience
How Does the Brain Work?
Your brain has never once seen the outside world. It sits in total darkness, receiving only electrical signals, and builds everything you experience from those alone. Here is how.
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