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Is painting your nails bad for you?Painting your nails is generally considered safe, but the practice does carry a few health concerns that scientists don't fully understand yet.
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Does gum really take 7 years to digest?Gum is full of non-food items, like resins, emulsifiers and softeners. So what happens when we swallow a piece?
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How do people 'wake up' from comas?People can stay in comas for weeks, months or even years. But what causes some of these patients to "wake up"?
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Can humans see ultraviolet light?Ultraviolet has very short and energetic wavelengths that are shorter than violet on the visible spectrum. But can people see UV?
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Can faking a smile make you feel happier?Lab research often gives one answer about whether smiling can make you feel happier, but does that translate to the real world?
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Do snakes have ears?Snakes have anatomy that helps them hear, you just can't see it when they slither by.
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Why are small dogs so fierce?There are a few possibilities for why small dogs can be so menacing.
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Why do dogs and cats get the zoomies?Pets often run around in random bursts of speed, an activity called frenetic random activity periods, or FRAPs. But why do they do it?
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Why do we have different blood types?The disease malaria appears to have influenced blood type prevalence.
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What do ants smell like?Different ants emit different smells. Here's why.
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Why do cats and dogs rub their butts on the floor?Here's why your cat or dog might be rubbing its butt on the floor.
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What's it like inside a kangaroo pouch?Here's what it's like inside a kangaroo's pouch, where joeys can live for up to one year.
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Why do wisdom teeth come in so late?Here's why wisdom teeth usually don't come in until the ages of 17 to 21.
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Are jackalopes real?Can rabbits grow horns, as the legendary jackalope does?
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Why does cold fresh air help nausea go away?Here are some theories as to why cold air helps get rid of nausea.
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Why do so many people have back pain?Here's why back pain is so universal among our species.
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Why don't we breathe equally out of both nostrils?Most people do not breathe equally from both nostrils and tend to have a dominant side.
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Why do we grind our teeth?Grinding our teeth damages them, so why do we do it?
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Have any human societies ever lived underground?Societies have lived underground before, sometimes for weeks at a time.
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Why do women tend to outlive men?Women tend to outlive men because of biological and social factors.
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Why do we blink?Why do humans blink so much?
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Can fish and other marine animals drown?Can animals that live in the water suffocate?
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Why do we have eyebrows and eyelashes?What role do our eyebrows and eyelashes play?
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Why do we grow more hair on our heads than on our bodies?Why aren't humans covered in dark, scruffy body hair, like apes are?
