Canadian Press: A study has produced the strongest evidence yet that climate change is forcing hundreds of valuable fish species toward the poles. The paper, published in the ICES Journal of Marine Science on Friday, concludes that Canadian and Arctic waters may end up with more species and greater abundance. But fisheries in the tropics, where people depend more heavily on seafood, may become hollowed out. "The variety of species available for fisheries in the tropics will decrease," said co-author William Cheung...