Northern forest winters have lost cold, snowy conditions that are important for ecosystems and human communities - Contosta, Alexandra; Casson, Nora; Garlick, Sarah; Nelson, Sarah; Ayers, Matthew; Buralkowski, Elizabet; Campbell, John; Creed, Irean; Eimers, Catharine; Evans, Celia; Fernandez, Ivan; Fuss, Collin; et al. (Ecological Applications, 2019)