Cloud-watchers can talk all about the interesting shapes they've noticed over the years. They may have been gazing out the car window during a road trip, or tanning on the beach, or on a morning walk.

"I'm always looking for an interesting shape, and this one was more than that," said David Smith, its creator and a retired printing technician from northern England, in a phone interview.

Shapes occur everywhere in nature, yet they are also recreated in man-made objects. A careful look around reveals the way in which shapes, both natural and man-made, can combine, forming an endless ...

One cactus with an interesting look with fuzzy white hair is called an 'old man cactus.' The old man cactus, for what it's worth, that's it's own hair. It doesn't go bald.