African wildlife expert Rob the Ranger observes a lion pride resting in the shade of acacia trees in Maasai Mara.

Christine Wangari is growing a greener Kenya. Her work in Nairobi continues the legacy of Wangari Maathai and inspires the ...

Christine Wangari’s seedlings left Nakuru for Nairobi’s dusty lots. Today, her acacias, crotons, neem, and others help define what is today, the green city under the sun. SPECIAL REPORT | BIRD AGENCY ...

Nothing lifts a garden’s mood quite like the burst of bright yellow blooms—even when the skies are gray. Yellow flowering ...

A: Everyone worries about iron deficiency when the subject is gardenias, but this is definitely not that. Iron deficiency ...

An ancient oak tree in northern Greece is believed to be among the oldest surviving tree of its kind in Europe.

Every year the eastern cottonwood trees in Michigan release their fluffy seeds. The end of June likely marks the end of this process. Here's what to know.

A tree trunk with a wire or metal sheet around it usually means that the homeowner is trying to protect the tree from pesky ...