The oldest tree species is the Great Basin bristlecone pine (Pinus longaeva). The oldest tree of the species is named Methuselah and is more than 4,800 years old. The longevity of the Great Basin ...

A critical species to the ecosystem is facing a variety of threats. This Earth Day, ABC News is taking a look at solutions for issues related to climate change and the environment with the series, ...

Shop Christmas trees now and plant them after the holidays; see top picks like Arizona cypress, Deodora cedar and Aleppo pine, plus what to avoid.

Just outside of Clear Lake, the Petersen family of Petersen Tree Farm is hard at work preparing their 227-acre farm for the upcoming Christmas tree season. Their farm's scenic rolling hills are home ...