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 ...

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 ...

There are plenty of places to get in on the sweet tradition of turning maple-tree sap into syrup in southeastern Wisconsin ...

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 ...