Petrified Wood in Arizona National Park
Visitors to Arizona's Petrified Forest National Park walk among trees that have turned to stone over 200 million years,…
Zhangye Danxia's Colorful Mountains: Nature's Painted Masterpiece
Beneath the vast skies of China's northwest, a 100 square mile canvas of striped mountains showcases a geological spect…
Yellowstone's Grand Prismatic Spring: A Living Eye
Beneath Yellowstone's vast sky, a vibrant blue circle pulses with life — the Grand Prismatic Spring. Its dramatic color…
Devil's Hole Pupfish Survival in Nevada Cave
In Nevada, a 72-foot hole plunges over 500 feet in depth, ending in a sprawling subterranean cavern, it's home to a uni…
Chile's Glowing Marble Caves: A Natural Wonder
The marble caves of Chile's General Carrera Lake are a geologic mystery: how can water change the color of stone on its…
Penitentes Ice Formations in the Andes
Penitentes are colossal, icy spikes that jut up from the Andean peaks, standing like sentinels in the world's most unus…
Ball's Pyramid Tree Lobster Survival Story
High above the Pacific, a lone volcanic rock harbored a secret—the last of the tree lobsters, thought extinct since 191…
Arizona's Unique Desert Pool and Its Mysteries
Deadly for fish, a vast desert pool in Arizona’s Verde Valley teems with rare life — five unique species, including a b…
Mystery of Round Beach Stones Revealed
Stones the width of outstretched arms litter the beach, yet they are not the work of wind and surf. Six million years a…
Biomimicry: Nature's Designs vs.
A manta ray's graceful glide and a flying fish's aerial leap inspired the design of the world-famous B-2 stealth bomber…
Pamukkale Turkey's Travertine Terraces Aerial View
From above, Pamukkale's travertine terraces resemble an enormous, luminous cascade, a geological marvel carved over cen…
Darvaza Gas Crater: Turkmenistan's Door to Hell
A burning chasm in Turkmenistan’s desert has been aglow for decades, with scientists and locals still debating the exac…