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Endings make way for new beginnings for Earth and SN

3:06pm, January 25, 2017

Life on Earth has survived at least five major extinction events, but it is the dinosaurs’ mass die-off that most captures our imagination. It appears to have been a dramatic one, as Thomas Sumner writes in "Devastation detectives try to solve dinosaur disappearance" (SN: 2/4/17, p. 16). A fiery asteroid impact carved out a chunk of what’s now below the Caribbean Sea, killing many animals instantly. Far more species slowly dwindled, with debris from the impact blocking the sun and altering the climate worldwide. A new twist, Sumner reports, is growing evidence of the planetary reach of long-lived eruptions that created the massive Deccan Traps in present-day India. The volcanic spew broadly

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