A photon of light can take thousands of years to escape the Sun's core.
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The discovery of DNA’s structure occurred in 1953.
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Fossils form when organisms are preserved in sediment over millions of years.
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The Earth's interior is layered into crust, mantle, and core.
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The 1991 eruption of Mount Pinatubo affected global temperatures.
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The Earth's magnetic field is generated by its outer core.
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Some metals such as mercury are liquid at room temperature.
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Fossils are formed when remains are preserved in rock over millions of years.
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Heatwaves can pose serious risks to human health.
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