In order to grow properly, trees need an adequate period of warmth during their growing seasons; otherwise, the cell walls of ...

Tree ring widths, which reflect the dry or wet conditions affecting tree growth annually, provide valuable proxy climate data from before historical recordkeeping began. Rui Guo and colleagues ...

By ALYSSA VAN DOORN The Outside Story The longer, warmer days of spring spark phenological changes in trees, from root to tip ...