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    • Did A Gamma-Ray Burst Initiate The Late Ordovician Mass Extinction 

      Melott, Adrian L., Lieberman, B. S., Laird, Claude M., Medvedev, Mikhail V., Thomas, Brian C., Cannizzo, John K., Gehrels, Neil, and Jackman, Charles H.
      Gamma-ray bursts (GRBs) produce a flux of radiation detectable across the observable Universe. A GRB within our own galaxy could do considerable damage to the Earth's biosphere; rate estimates suggest that a dangerously ...