- Fatrock386
- uploaded: Dec 28, 2008
- Hits: 244
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Scientists believe gamma ray bursts were responsible for a mass extinction 450 million years ago. The gamma rays strip away the ozone layer and generate chemical smog, producing a widespread chill that grips the Earth. An expected electromagnetic pulse will zap all of our electronics. How will our modern cities hold up in the face of a previous global catastrophe?
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