The 50th rendition of the annual competition showcases butterfly wings on the tips of needles and cells from mouse brains.

We all know the recognizable orange and black of the monarch butterfly, but what about the unique transparent look of the glasswing? Here are 60 beautiful butterfly pictures as well as facts about ...

Browse 430+ simple butterfly outline pictures stock illustrations and vector graphics available royalty-free, or start a new search to explore more great stock images and vector art. Butterfly flying ...

Browse 3,400+ butterfly images clip art pictures stock illustrations and vector graphics available royalty-free, or start a new search to explore more great stock images and vector art. Happy Mother's ...

@dianamurguta The Great Mormon is a swallowtail butterfly living in the Malay Archipelago and Indonesia. Image credits: @dianamurguta Diana’s Instagram is covered in colorful photos and videos ...

But the same images have also brought out skeptics, many of whom say that one of the unidentified flying objects is probably just an out-of-focus butterfly. The International UFO Lab was set up ...