Invasive species don't stop evolving themselves. Consider the infamous brown rats of New York City, which have evolved longer noses and shorter upper molar t ...

While trees can cool some cities significantly during the day, new research shows that tree canopies can also trap heat and raise temperatures at night. The study aims to help urban planners ...

As Australian cities heat up and dry out, street trees are emerging as frontline defenders of urban livability. Street trees make city life more bearable during heat waves. They also improve human ...

Urban trees suffer from prolonged periods of drought, ... especially about the selection of new tree species, the inventorying and regular monitoring of the tree population, ...

In urban environments, trees are threatened by heatwaves and lack of rain, both predicted to increase in coming decades. Towns and cities are often home to a great diversity of trees, including those ...

As greenhouse gas emissions nudge temperatures higher, trees’ growing ranges are shifting northward, projections from the U.S. Forest Service show. Trees near the southern edge of their ...

How urban tree selection affects your allergies. Tom Ogren, the independent researcher who first explained botanical sexism, traces its origins back to the USDA’s 1949 Yearbook of Agriculture.

In response, scientists and urban foresters are trying to speed up the process, thinking strategically about where to source new trees and using experiments to predict the hardiness of new species.