People travel from all over the world to see California's beautiful redwood forests. But some of these spectacularly tall and long lived trees aren't doing as well as they once were, particularly the ones in urban settings. Reporter Dana Cronin explores what makes these magnificent giants so unique, and why they're facing growing challenges.

Additional Reading:

• The Bay Area's Famous Redwood Trees Are Struggling
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This story was reported by Dana Cronin. Bay Curious is made by Olivia Allen-Price, Amanda Font, Christopher Beale and Brendan Willard. Additional support from Cesar Saldana, Jen Chien, Katie Sprenger, Jasmine Garnett, Carly Severn, Jenny Pritchett and Holly Kernan.