A tree is trending on Reddit — because it's no ordinary tree. The most dangerous tree on the planet can be found in Mexico, the Caribbean and Southern Florida. One touch from the tree's sap causes ...

Unless you are intent on making your own maple syrup, you probably haven't given tree sap much thought. So, let's take a deeper dive into a tree's 'blood' or sap and the normal flow in the fall for ...

Just as blood moves important stuff around the human body, sugary sap moves important things around a tree. My friend Nadia Valverdi told me all about it. She’s a researcher at Washington State ...