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Probing underground, where an eruption could affect everyone on Earth
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Why don’t we know how tall they are?
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Why Earth's most 'untouched' places hide the footprint of humanity
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Plus the rest of the week’s best reads
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What should we do to avoid sinkholes?
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Is burning peat creating a health crisis?
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A new idea for exploring the deepest oceans
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Uncharted regions closer than you think
