What Is Killing These Indestructible Swamp Trees?

In the Atchafalaya Basin—the largest river swamp in the U.S.—ancient cypress trees act as natural barriers against hurricanes and extreme weather. Spanning a million acres, these nearly indestructible trees have protected Louisiana's coast for thousands of years. How does this million-acre ecosystem protect Louisiana’s communities, and how can we protect it? Untold Earth explores the seeming impossibilities behind our planet’s strangest, most unique natural wonders. From fragile, untouched ecosystems to familiar but unexplained occurrences in our own backyard, this series chases insight into natural phenomena through the voices that know them best. Untold Earth is produced in partnership with Atlas Obscura and Nature. ***** PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateTerra ***** Subscribe to PBS Terra so you never miss an episode! https://bit.ly/3mOfd77 And keep up with PBS Terra on: Facebook:   / pbsdigitalstudios   Tiktok:   / pbsterra   Instagram:   / pbsterra