Intricate boxwork in Wind Cave, a cave formation found here more than anywhere else, Wind Cave National Park, South Dakota, USA

Navajo Sandstone shaped like cauliflower, cracked into polygons, at White Pocket, Vermilion Cliffs National Monument, Arizona, USA

Saguaro

Sea ice near shore on a cove opening to the Atlantic Ocean, with a fishing boat, in Newfoundland, Canada [No property release; available for editorial licensing only]

Wind rippling the surface of Trap Lake along the Pacific Crest Trail, Mount Baker-Snoqualmie National Forest, Washington State, USA

Navajo Sandstone shaped like cauliflower, cracked into polygons, at White Pocket, Vermilion Cliffs National Monument, Arizona, USA

Best seen on black: press L to view.

Better in the original size!

Quaking Aspen, Populus tremuloides, forest of bare branches along beginning of Wheeler Peak Summit Trail in Great Basin National Park, Nevada, USA

Pinus ponderosa, the Real Deal.

Closeup of spectacular ice formations of Eben Ice Caves, Rock River Canyon Wilderness, Hiawatha National Forest, Michigan, USA

Valley Oak, Quercus lobata, fallen leaves in December, Pinnacles National Park, California, USA

[Adiantum aleuticum]

Quaking Aspen, Populus tremuloides, forest of bare branches along beginning of Wheeler Peak Summit Trail in Great Basin National Park, Nevada, USA

[Iris siberica]

Patterns of ice on the Upper Harbor in February in Marquette, Michigan, USA

Wood grain of a dead conifer in the Buckhorn Wilderness, Olympic National Forest, Olympic Mountains, Washington State, USA

Early light on Navajo Sandstone shaped like cauliflower, cracked into polygons, at White Pocket, Vermilion Cliffs National Monument, Arizona, USA

Navajo Sandstone shaped like cauliflower, cracked into polygons, at White Pocket, Vermilion Cliffs National Monument, Arizona, USA

Lush mosses growing on recently melted out wet soil along the Cispus River in the Goat Rocks Wilderness, Gifford Pinchot National Forest, Washington State, USA

Parents analyze structure and function in objects from nature during interactive keynote STEM workshop for parents conducted by Dr. Diana Wehrell-Grabowski.

Parents construct aeronautical models during interactive STEM keynote workshop conducted by Dr. Diana Wehrell-Grabowski during the EYH Conference.

Took this shot from my window which has a mesh.The things outside seemed to form a pattern when i bumped up the contrast. Do you see it or is it just me? :)

Cross-country ski tracks descending down a hill on a golf course in central Michigan, USA

Navajo Sandstone shaped like cauliflower, cracked into polygons, at White Pocket, Vermilion Cliffs National Monument, Arizona, USA

Lush mosses growing on recently melted out wet soil along the Cispus River in the Goat Rocks Wilderness, Gifford Pinchot National Forest, Washington State, USA

Parents analyze structure and function in objects from nature during interactive keynote STEM workshop for parents conducted by Dr. Diana Wehrell-Grabowski.