Global warming is reshuffling the ranges of animals and plants around the world with profound consequences for humanity, according to a major new analysis. Rising temperatures on land and sea are increasingly forcing species to migrate to cooler climes, pushing disease-carrying insects into new areas, moving the pests that attack crops and shifting the pollinators that fertilize many of them, an international team of scientists has said.They warn that some movements will damage important industries, such as forestry and tourism, and that tensions are emerging between nations over shifting natural resources, such as fish stocks. The mass migration of species now underway around the planet can also amplify climate change as, for example, darker vegetation grows to replace sun-reflecting snow fields in the Arctic. This mass movement of species is the biggest for about 25,000 years, the peak of the last ice age, say the scientists, who represent more than 40 institutions around the world. “The shifts will leave ‘winners’ and ‘losers’ in their wake, radically reshaping the pattern of human wellbeing … and potentially leading to substantial conflict,” the team warn. “Human society has yet to appreciate the implications of unprecedented species redistribution for life on Earth, including for human lives.”