Ice Age Imprint Found On Cod DNA ScienceDaily (Nov. 14, 2007) — An international team of researchers, led by the University of Sheffield, has demonstrated how Atlantic cod responded to past natural climate extremes. The new research could help in determining cods vulnerability to future global warming.Atlantic cod. Professor Bigg of the University of Sheffield said: "This research shows that cod populations have been able to survive in periods of extreme climatic change, demonstrating a considerable resilience. However this does not necessarily mean that cod will show the same resilience to the effects of future climatic changes due to global...