Agence France-Presse: Climate change will cause key species of fish to migrate towards the poles, badly depleting many commercial fisheries, scientists said in a study published on Thursday. “The impact of climate change on marine biodiversity and fisheries is going to be huge,” said its lead author, William Cheung, of the School of Environmental Sciences at the University of East Anglia, eastern England. Cheung’s team used a high-powered computer model, based on knowledge of 1,066 species of fish, …