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What's the strongest muscle in the human body?Several muscles can claim the crown, depending on how you measure strength.
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What's the longest someone has been clinically dead — but then come back to life?When someone's heart stops beating, their brain cells start dying within minutes. But sometimes, they can still come back from the dead.
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Why do avocados turn brown so quickly — and are they OK to eat at that point?Why do avocados turn brown in a flash? The answer is in the air.
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Who discovered America?Christopher Columbus was far from the first person, and not even the first European, to reach the Americas.
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How long does DNA last?The world's oldest DNA comes from a 2.4 million-year-old ecosystem in Greenland. Will scientists eventually sequence even older DNA?
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Do figs really have dead wasps in them?Does every fig you eat really have a dead wasp inside?
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Why does medicine taste bad?Medicines help us recover from illness, but sometimes they taste gross. Why is that?
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What's the hottest temperature the human body can endure?Researchers believe there's an upper limit to the temperature the human body can withstand — but many people could face deadly health problems before reaching that threshold.
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What happened to the asteroid that killed the dinosaurs?A killer asteroid slammed into Earth at 27,000 mph around 66 million years ago. Where is it now?
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