On Earth Day, we take a look back at the rocky history of "tree-huggers." The term originated in the 1970s in the Himalayas ...

1890s-1930s -- City forestry efforts begin with the transplanting of elms and other species from parks and forests to boulevard locations. The city's first population of roadside elms stands in excess ...

Tree-ring data from geographically disparate growth regions help uncover the precise age of wood used in the Mediterranean in the Bronze and Iron Ages, according to a study. Tree-ring records gathered ...