Twelve-year-old Milo Weinberg remembers the apple tree at Cambridge’s Tobin Montessori School like an old friend. He played around its trunk for years. He learned to ride his bike around it. And when ...

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

Piet Mondrian painted the same tree in "The gray tree" (left) and "Blooming apple tree" (right). Viewers can readily discern the tree in "The gray tree" with a branch diameter scaling exponent of 2.8.

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