Above: This photo tells an entire story. Taken at Roan Mountain State Park in Tennessee in January, it shows most of the deciduous trees are bare. However, you can easily see the light tan colors of ...

One of the reasons my wife and I rarely get sick of one another is that we are both intensely curious and we both enjoy a good discussion of logic. One of us will come up with a question about why ...

What’s up with the tree leaves? Have you noticed they’re still hanging on? Many trees have a full canopy of the leaves that appear dried but aren’t falling. This is because we are experiencing a ...

Add Yahoo as a preferred source to see more of our stories on Google. This is a maple tree that still has a few dead leaves on it during winter. - Marcia Straub/Getty Images The sound of the wind ...

Tom Oder is a writer, editor, and communication expert who specializes in sustainability and the environment with a sweet spot for urban agriculture. There's a term for this curious leaf-retention ...

Three of my most prized trees are the oaks we planted in our front yard shortly after we moved. They share our front yard with a black gum (Nyssa sylvatica), red twig dogwoods (Cornus sericea), witch ...

Warning: This graphic requires JavaScript. Please enable JavaScript for the best experience. Not all trees drop their leaves in the fall. Even in the height of winter ...

Some trees hold onto their leaves long after most others have dropped them. Have you ever wondered what keeps these leaves clinging in the depths of winter? It’s a phenomenon known as leaf marcescence ...