Amazingly, you would experience less gravity at Earth's equator. An object's gravitational pull on another object depends upon both objects' masses and their mutual distance.
Some current theories focus on yawning as a social cue (like laughing) that communicates information and helps organize group behavior.
Fecal matter, aka poop, is the end product of the digestive process - and here's the secret of its chief visual property.
Don't get offended! You could be hyper-hygienic and you'd still ooze odors. Even grosser, bacteria's to blame.
Bruxism sounds like a radical political philosophy, but here the proletariat is the citizenry of your mouth, being ground down by an oppressive reflex of the jaw.
When you pop the top, the pressure inside the can decreases, causing the CO2 to convert to gas and escape in bubbles.
Evolution seems to have allowed for varying types based at least in part on environmental pressures.
You'll never swim out to the horizon, and you'll never reach a rainbow's end. The visibility of both requires distance between object and observer.
Those external folds of cartilage and skin, called the pinna, have important resonant properties that modify high-frequency sound waves entering the ear before funneling them to the middle ear.
That ringing or buzzing in the ear is a symptom of hearing loss resulting from excessively loud noises.
Prometheus stole fire from the gods and bequeathed it to humans. Aristotle defined it as one of the four essential elements.