Leonardo da Vinci’s sketch of a tree illustrates the principle that combined thickness is preserved at different stages of ramification. The math that describes the branching pattern of trees in ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Trees depicted in ...

Trees may reveal when they’re thirsty by lifting and drooping their branches, offering a simple visual clue to forest water ...

What must you see to ID a tree? And what must you see during the winter, when a thick cover of snow sits atop leaf beds. That is what Bill Michaelek, manager and naturalist at Beaver Meadow Audubon ...