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Professor Donald Turcotte's team at Cornell University, USA, is looking at forest fires using 'self-organised criticality' mathmatics to predict size and number of fires in an area. The effect on sexual preference of sheep and goats which had been cross-fostered. The latest search for extraterrestrial intelligence (SETI) project is Phoenix which has two of the most powerful radio telescopes working together. Will pig organs ever be used in human transplants? The ballistics of baseball.