This rainforest tree solved one of evolution’s hardest problems. Here’s how it evolved to use tension and geometry to fire ...

An apple may not fall far from the tree, but for a leaf, it depends on its shape. Elm or apple leaves — oval and symmetrical, with few protruding lobes — fall quickly, making them likely to end up ...

The ability to stick to smooth objects and detach when needed is a perpetual game of geometry for tree frogs, which repeatedly adjust the angle of their toes with respect to the surface. White’s tree ...