Changing Planet

The poison in paradise

Biscayne National Park, Florida–An abundant and beautiful tree in the Biscayne National Park has a sting. Like poison ivy and poison oak, the poisonwood tree can leave a nasty rash on anyone who brushes against it.

Biscayne Bioblitz 2010.jpgBob Showler of the National Park Service gave volunteers and rookies like myself a lesson about the poisonwood tree at the bioblitz today.

I have no intention of straying off the park’s trails while I am here, so hopefully I won’t be coming into contact with this tree. The ferocious mosquitoes are enough of a hazard for me.

Watch Showler talk about poisonwood in this video. Apparently some animals are immune to its toxins–they even eat it!

Posted by David Braun

More details about the 2010 bioblitz

Follow the bioblitz on Nat Geo News Watch

Forty years in U.S., UK, and South African media gives David Braun global perspective and experience across multiple storytelling platforms. His coverage of science, nature, politics, and technology has been published/broadcast by the BBC, CNN, NPR, AP, UPI, National Geographic, TechWeb, De Telegraaf, Travel World, and Argus South African Newspapers. He has published two books and won several journalism awards. He has 120,000 followers on social media. David Braun edits the National Geographic Society blog, hosting a global discussion on issues resonating with the Society's mission and initiatives. He also directs the Society side of the Fulbright-National Geographic Digital Storytelling Fellowship, awarded to Americans seeking the opportunity to spend nine months abroad, engaging local communities and sharing stories from the field with a global audience. Follow David on Facebook  Twitter  LinkedIn
  • kamal

    i like this blog

    thank u so much for this good article

About the Blog

Researchers, conservationists, and others share stories, insights and ideas about Our Changing Planet, Wildlife & Wild Spaces, and The Human Journey. More than 50,000 comments have been added to 10,000 posts. Explore the list alongside to dive deeper into some of the most popular categories of the National Geographic Society’s conversation platform Voices.

Opinions are those of the blogger and/or the blogger’s organization, and not necessarily those of the National Geographic Society. Posters of blogs and comments are required to observe National Geographic’s community rules and other terms of service.

Voices director: David Braun (

Social Media