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

Columnar basalt formations along Reynisfjara Black Sand Beach in Iceland

Wind rippling the surface of Snow Lake along Snow Lake Trail leading into the Alpine Lakes Wilderness, Mt. Baker–Snoqualmie National Forest, Washington State, USA

Cleaning a horn coral from Fossil & Prairie Park Preserve, Rockford, Iowa, USA

Bark of dead conifer at Iceberg Lake in Ansel Adams Wilderness, Inyo National Forest, California, USA

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

Poor attempt at camouflage? Yes, it ate the whole umbel, and I'm hoping those warning colors (do you hate clowns?) served their intended purpose of allowing this creature to reach adulthood.

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

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

Forest reflections on a pond in Canadian Lakes, Michigan, USA

Rivulet Erosion formed these features at the Cannonball Mystery location in Theodore Roosevelt National Park, North Unit, North Dakota, USA

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

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

Forest reflections on a pond in Canadian Lakes, Michigan, 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]

[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