An Arkansas tree cutter who made jars of the lethal poison ricin on his rural property was sentenced to eight years in prison for possessing a biological agent infamously known for being one of ...

Last year, the campus lost an iconic community fixture, an elm tree that stood adjacent to University Hall on the College Green for at least 80 years. Groundskeepers had been noticing signs of ...

Siberian elm (Ulmus pumila) is a fast-growing, aggressive tree that tolerates all kinds ... Staghorn sumac (Rhus typhina) is a relative of poison ivy and causes allergic skin reactions in many ...

An Aussie council plans to cut down a row of trees that have kept a street shaded since the end of WWII due to concerns ...