Add Yahoo as a preferred source to see more of our stories on Google. Getty Images Unless you are intent on making your own maple syrup, you probably haven't given tree sap much thought. So, let's ...

Tree sap is the sticky substance you sometimes see oozing out of tree trunks. Pure maple syrup is the most widely known edible sap product, derived from the sap of the maple tree, but there are many ...

Every year I teach several winter-tree identification classes. Even though they are always held outdoors no matter how cold it is, student evaluations indicate such classes are generally fun. Showing ...

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 ...

Q: I recently purchased a home with several mature navel orange trees. One of the trees has about half the bark missing from the trunk and sort of circular looking lesions that ooze sap in the area ...

The Waterloo 4-H club kicked off the beginning of maple syrup season with the first meeting of a new session for its syrup ...