themcglynn.com

29 Jun

‘Then and Now’ Photos That Show Dramatic Changes on Earth

‘Then and Now’ Photos That Show Dramatic Changes on Earth 1/61 SLIDES © NASA Sixty ‘Then and Now’ Photos That Show Dramatic Changes on Earth Throughout the planet’s 4.5-billion-year history, the Earth has undergone amazing and dramatic changes. Even today, the planet is in a constant state of flux, and while some of the changes it […]

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