In North Dakota, this common name refers to Ulmus pumila, which is known within the tree industry as Siberian elm. If you go ...

The tree likely started growing in Madison some time between 1775 and 1823.

A forest health conditions report found 70,000 acres of dead conifer trees on state, private, tribal and federal forests.

This fossil is 13 million years older than any ant fossil found before—and reveals a sophisticated predator that lived alongside the dinosaurs.

A 113-million-year-old hell ant that once lived in northeastern Brazil is now the oldest ant specimen known to science, finds ...

If you're thinking of adding a street tree out front, Penn State urban forester Vincent Cotrone has some recommendations.