Scientists have mapped microbe populations in human guts, deep-sea ecosystems and even clouds. Yet the microbial communities inside tree trunks have remained largely unseen until now. For a recent ...

Most people are familiar with the notion that "tree rings" — the concentric bands visible on a cross-section of a tree's trunk — serve as an indicator of a tree's age. Researchers at the University of ...

A hoopoe clings to the side of a tree trunk while feeding a chick inside a nest cavity. Its wings are spread wide, helping it maintain balance as it delivers food into the opening. This posture allows ...