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08.02.2016: Tree-ring measurements reveal a period of extreme cold in Eurasia about 1,500 years ago. It coincides with epidemics and political turmoil, WSL researchers report in Nature Geoscience. More
Globalisation means that the world has grown small for both us humans and other creatures. New animal and plant species are constantly migrating to Switzerland or are introduced from other continents via a variety of routes.