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Global terrorism follows a power law

Extreme acts of terrorism could be more common than we think according to two research students at the University of New Mexico in the US. Aaron Clauset and Maxwell Young have found that the frequency and severity of terrorist attacks - defined as the number of deaths plus the number of injuries - are related by a power law. The results suggest that we could witness another act of terrorism comparable with that on September 11, 2001 within seven years (arXiv.org/abs/physics/0502014).