In this excerpt from her new book Tree Notes: A Year in the Company of Trees, National Geographic Explorer Nalini M. Nadkarni reveals how tiny “windows” in the bark of trees help them respire.

Add Yahoo as a preferred source to see more of our stories on Google. A walnut sapling being placed into the ground - Jan Dlutko/Shutterstock Planting the right type of tree can possibly make your ...

If you have ever been hiking, there is a good chance that you have run into some sort of paint markings on trees. But while certain colors are often used to guide you along a designated path, ...