For many Southerners, Christmas means setting up the tree, putting up the stockings, hanging a wreath on the door, and pulling the Spode Christmas Tree dishes out of the china cabinet. While Spode is ...

What makes a tree a tree? Or rather, why can we recognize trees in even quite abstract depictions when they are so varied in nature? Researchers have found a clue in the branches, and used math to ...

While teaching a class on coarse-graining methods in physics, James O'Dwyer realized that the technique could be used to understand how microbes evolve over time. The results, published in PNAS, ...

Researchers used more than 1,400 climate-sensitive tree-ring chronologies from multiple tree species across North America to reconstruct the Palmer drought severity index (PDSI), a widely used soil ...

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 ...