If you're outdoorsy, chances are you've encountered poisonous plants such as poison ivy, poison oak, or sumac. But what does ...

Learn how to identify poison ivy ... a slender stem. It looks like a shrub or small tree that can reach 25 feet. In the fall, ...

As more people venture outside to enjoy warm weather, knowing how to identify and avoid poison oak could help to avoid a future of headaches and itchy red rashes. A helpful old saying is “leaves ...

Rising atmospheric carbon dioxide levels are causing poison ivy leaves to grow larger and produce more of the toxic oil. Produced by Jacqui Frank. Original reporting by Jessica Orwig. Follow BI ...