If you look up toward certain types of towering trees—including eucalyptus, Sitka spruce, and Japanese larch—you may notice a unique phenomenon: the uppermost branches don’t touch. Known as “crown shyness,” this natural occurrence results in rupture-like patterns in the forest canopy that seem to perfectly outline the trees’ striking silhouettes. Since scientists first started studying the topic in the 1920s, crown shyness has been … Continue reading Trees with “Crown Shyness” Mysteriously Avoid Touching Each Other