Add Yahoo as a preferred source to see more of our stories on Google. Tree branches in art throughout history follow geometric rules related to fractal geometry. 'Almond blossom' by Vincent van Gogh.

Scientists have newly described three extraordinary species of tree toad that leapfrog over the egg-to-tadpole stage. The females give birth on land to dozens of toadlets, each measuring just a few ...

Joshua trees are weird. I say this as an expert on Joshua trees. Joshua trees look weird — their twisty branches end in bouquets of stiff, knife-like leaves, which die back to hang from the branches ...

Kendra Pierre-Louis: For Scientific American’s Science Quickly, I’m Kendra Pierre-Louis, in for Rachel Feltman. The Christmas tree feels like a tradition from time immemorial—and in some ways it is.

Do artists and scientists see the same thing in the shape of trees? As a scientist who studies branching patterns in living things, I’m starting to think so. Piet Mondrian was an early 20th-century ...