The human brain dedicates more neural real estate to the hands and face than to the rest of the body combined.
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Your stomach replaces itself every few days.
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The Earth is about 4.5 billion years old.
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The Earth's interior is layered into crust, mantle, and core.
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Early humans hunted megafauna during the Ice Age.
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The Earth's rotation is gradually slowing over time.
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The longest winning streak in professional sports can span years.
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Certain fish can inflate their bodies to appear larger.
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A blue whale's heart can weigh over 400 pounds.
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