In a first, physicists have directly seen Hofstadter’s butterfly—a long-sought-after fractal in the quantum realm ...

Painted ladies are the ultramarathoners of the butterfly world—even more so than monarchs. Scientists have long known about ...

Jorge Rickards: Imagine, imagine the lightness of a butterfly. And there are so many of them here that they actually bend the trees. And they like the firs because they have so many little leaves ...