NEW YORK -- It's a tough time to be a tree. For this Earth Day, National Geographic has focused its lens on humanity's relationship with the world's 3 trillion trees and 10 billion acres of forest, ...

The show starts off with the family exploring the important role of trees in Earth's ecosystem, from the plight of the almost extinct American Chestnut to the heights scientists go to study the forest ...

National Geographic Explorers participating in the National Geographic and Rolex Perpetual Planet Ocean Expeditions are conducting scientific research across Earth’s most crucial ecosystem. Through ...