“While this specific mnemonic device exists to deter people from touching poison ivy, it turns out there are also many ...

While not truly poisonous, they all cause a painfully itchy rash upon contact due to an oil called urushiol on their 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 ...

The poison ivy contains an oily resin or sap in all parts of the plant that can cause an allergic reaction in most people ...