Incorrect pruning, particularly topping, is the surest way to ruin a tree. If it doesn’t kill the tree outright, it will ...

Scientists hope to prevent deaths from climate change, but heat and cold are more complicated than we thought.

Bioenergy with carbon capture and storage can scale faster than other approaches. But some experts are dubious about the climate benefits.

Some plants are already budding for spring, and don't need pruning. But these shrubs benefit from a light pruning in autumn.

Portland Parks and Recreation are looking for volunteers for the city’s 22nd annual No Ivy Days events on October 25.