The Callery pear was meant to help prevent fire blight from destroying the commercial pear industry. Then it became invasive.

In some forests, trees grow in a manner that keeps their branches from touching one another. Despite decades of study, scientists aren't exactly sure why.

Eucalypts are now cosmopolitan, spread around the world through imperialism and globalization. Unfortunately, they're also highly flammable.

Sub-Saharan Africa's iconic baobab trees are experiencing die-offs at an alarming rate. What makes these distinctive trees so unique?

Soil fungi supply nutrients to trees, but as they wither from pollution, trees suffer too.

Extinct in the wild, the Franklinia tree is still cultivated in botanical gardens, private homes, parks, even cemeteries. It's also got an interesting Revolutionary-era backstory.

Palm fronds in Southern California are falling more frequently due to age, invasive species, and fungus, Artist Zoe Crosher casts these fronds in bronze.

Found mainly on Caribbean islands, Pisonia trees resemble any typical large, tropical tree. Typical, that is, until you notice the bones.

Corks come from a tree that is part of a unique ecosystem dependent on cork harvest for its survival.

Climate change is having an effect on the fungal communities in the soil that trees and other plants depend on.