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CBS Evening News | Reporter's Notebook: Earth Day perspective

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Reporter's Notebook: If Earth's entire history was squeezed into a single day

2min
If Earth's entire 4.5 billion-year history was squeezed into a single, 24-hour day, when would modern humans arrive? "CBS Evening News" co-anchor John Dickerson ponders the meaning of Earth Day. Air Date: Apr 22, 2025
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