Citizen science finds spring could come a month early to the United States

From a national collaboration among citizen scientists, educational institutions, environmental organizations, and federal agencies, Jeong et al . developed the first countrywide assessment of springtime tree budding based on in‐the‐field measurements. The phenological assessment, which measured the timing of bud burst for five tree species, was used to build a model of species‐specific budding across the continental United States. Using their tree budding model in forecasts of future climate change, the authors found that by the end of the century, tree budding across the United States will occur more than 1 month earlier in some places.