Streetlights left on all night cause leaves to become so tough that insects cannot eat them, threatening the food chain, a study has found. “We noticed that, compared with natural ecosystems, tree ...

Trees are often promoted as an important tool for combating climate change. That’s because trees take in carbon dioxide from the air and lock it away in wood and soil for years. But trees may not be ...

Welcome to our tree column, “Ask your local arborist.” Each month, arborists from the Davey Tree Expert Company in Menlo Park discuss a tree-related topic from general care and planting tips to how ...

YORK, Pa. — If your family gets a real Christmas tree each year, you might also find a few insects hitching a ride inside with the tree! This isn't abnormal. Anytime you bring an outdoor object in, ...

Invasive insects in the U.S. could kill up to 1.4 million street trees by 2050, according to researchers. In an international study published in the Journal of Applied Ecology, a team found that the ...