Extinction
2 stories
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techEarth's Catastrophic Fate If Sun Suddenly Vanished
MIT and George Mason scientists explain what happens to Earth and life if the sun disappears, from immediate blackout to ultimate freezing.
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worldGiant Tortoises Return to Galápagos Island After 150-Year Absence
Nearly 150 years after extinction, giant tortoises are being reintroduced to Ecuador's Floreana Island to restore its vital ecosystem.