Gretchen C. Coffman

Exploring Giant Cypress Trees From Top to Bottom

Welcome back to the wilderness of Central Laos, get ready to follow us to Vietnam as well on the second part of our National Geographic expedition, where our team is engaged in a long-term effort to survey, analyze, and ultimately ...

Search for the Giant Chinese Swamp Cypress: Meet the Tree Team

For this National Geographic-sponsored expedition to save the Critically Endangered Chinese swamp cypress (Glyptostrobus pensilis), we have brought together a dynamic group of people from the U.S., Scotland, and Laos. Let me introduce you to our team. We broke ...

What’s the Worth of a Single Tree Species?

High in the Annamite Mountains of central Laos, among hill-tribe villages, grows the majestic—and critically endangered—Chinese swamp cypress (Glyptostrobus pensilis). I’m here to find these trees, study them, and work for their protection. Why is this particular ...

Discovering the Endangered Cypress Trees of Laos

Come with us to one of the last truly wild places in Southeast Asia: the Annamite Mountains of central Laos. Here, along the Ho Chi Minh Trail, among hill-tribe villages, grows the majestic—and critically endangered—Chinese Swamp Cypress (Glyptostrobus ...